My Keto-Mojo TD 4279 Meter Won’t Sync or the Meter is Blocked

  • Last updated May 17, 2022

If you are trying to sync your Keto-Mojo TD-4279 with the Classic App or MyMojoHealth App and you get a message that says “Blocked” or “Unexpected Error”, please contact support@keto-mojo.com for more information and a solution.

Additionally, the Glucose and Ketone test strips for the TD-4279 meter model have been discontinued and we have transitioned to the new GK+ Meter with enhanced capability and better pricing on test strips. To make the transition easier for our customers, we are offering a special trade-up where you get the GK+ meter free with the purchase of the new strips.

The clickable link below includes detailed instructions on how to Trade-In your TD-4279 for the newer and enhanced Keto-Mojo GK+ meter:



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107 reviews

  1. For the past week I have been getting back into Keto. I have used my meter most days this week and syncing it with my iPhone 13. Everything was fine until this morning. After syncing with my GK+ meter the app showed me none of my recent data. I tried to resync my meter and phone but I’m told there are no records to sync.

  2. My meter is synced and I have been successfully downloading my results for 2weeks. Today it starts the download stops and says it’s download in zero. I tried unsyncing and syncing again with no success in downloading. How do I get it to successfully download again?

  3. Hi, my keto mojo stopped doing the sync today. It say 2 readings then went done it says 0 readings… I have the keto mojo GK+

  4. my machine will not sync. I was able to sync when I first set it up but it has not since then. It just says searching and never finds it.

  5. my keto meter (new version) is taking over 2 minutes to sync and I continue getting a message advising me to delete my meter readings as there are too many saved. I did this; however, I continue to have to wait over 2 mins for the device to sync with my phone and still receive the same error message. There are no readings left on my meter so I don’t know what the problem is. Pls help as this is frustrating.

  6. My new Keto-Mojo GK+ does not show up on my iPhone list of connected devices – it times out when I try to connect via Bluetooth,

  7. New GK+ meter won’t sync with iPhone 14 with IOS 16. Took a keto test and it still won’t sync. Doesn’t show up in Bluetooth and doesn’t respond to sync link in the Classic App.

  8. My new GK+ meter is also not syncing with the app. I replaced it bc the original one was not syncing. I can’t even add the readings manually and have it stay. Very very frustrating!

  9. I am unable to sync my meter with the app. This is a new problem.

  10. I need help interpreting what I assume to be an error message of E 2

  11. just post the instructions for how to sync instead of requesting that we contact support. If it isn’t syncable just say so.

  12. my meter is erratic about being on bluetooth and then doesn’t sync. I have an iPhone. Where do I go to make sure they sync?

  13. Hello,
    My bluetooth icon is blinking on the device, and bluetooth is enabled on my iPhone. I have 1 reading saved in the memory of my device. When I open the app and click Sync I receive the following error “Device error. Could not find the device. Please make sure the device is powered on and/or in bluetooth mode.”

  14. My meter is not syncing ketones. But it is syncing the glucose. If you can help me that would be great !!!!

  15. My Keto-Mojo used to only upload newest readings to iPhone via Bluetooth. Now it uploads all 998 reading every time and takes 5 minutes.

  16. The app logs out every time I close it on my iPhone. Why?

  17. I have a GK+ meter and recently I’ve been having trouble syncing with the phone and web apps. The phone app indicates a successful sync but the results don’t show up in the app. On one occasion they eventually showed up several days later. I really like the phone and web apps, when they work.

  18. My GK+ meter hasn’t been sync’ing for 2 days. (iOS) What should I do?

  19. My device says it syncs with my app but doesn’t display the information once it’s synced. Cannot find anything on how to fix this

  20. My meter is saying that it has synced with my phone, but the readings aren’t being displayed on the app.

  21. I need to know how to get my readings from my meter to my computer

  22. My meter is not synching to my app on my iPhone. I have the newer meter. Also keeps showing incorrect date on the app when I open it.

  23. My GK+ version is not syncing. It states it completed the sync, but does not show my readings stating 0 info was imported. This problem only started today.

  24. Hi! I just bought the Keto-Mojo monitor and I’m having trouble syncing it with my iPhone. And yes Bluetooth is enabled on my phone lol

  25. I just sent you an email. I keep getting an E3 message when I insert my testing strips. I’ve gone through several of them just this morning. I am using your strips and following your directions. They did a test of the system a couple of weeks ago and everything went fine. Now the strips are not working.

  26. Unfortunately still do not understand what makes the synk between the keto-meter to tje app in my iphone so slow.

  27. How do I get the data into the iOS health app? That’s the reason I bought this meter.

  28. Why is the app syncing 900+ readings every single time? It used to only take a few seconds to sync just the new readings.

  29. I’ve reset my iPhone (running on version 15 update). I’ve deleted and reinstalled the app. I’ve turned my Bluetooth off and on and I still cannot sync to the new GK+ Keto Mojo.

  30. Nowhere on your site is there any information about how to edit/delete entries in either the device or the app. It seems this function does not exist. If so, there should still be an FAQ somewhere that says “there is no way to edit or delete entries in either the device or the app”.

  31. when I search on why my app will not take a Manuel reading due to the fact my app will not read from meter. all I get is meter Manuel, how it works.

  32. What bluetooth connector?? There is no bluetooth connector in the kit I was sent.

  33. My ketomojo says it has synced but misses the most recent reading. It has the one from yesterday but missed today’s. It has done this twice. Any idea why? Or if there is a way to get my most recent included in my data recordings? Thanks.

  34. Am I able to delete readings from my meter? I don’t want to delete all the readings, just a specific reading.

  35. My keto mojo app says it syncing and has recorded 997 readings. It used to just read ones that had not been read before. Now it says it has read 997 readings but under my readings it says no readings in the selected date range and or with the selected tags and sources. The set date range is correct and I can see a seven day range on trends, but nothing on my readings. How do I fix this?

  36. this meter won’t hook up to my phone. I have done all your suggestions and it does’t work. when I try to sync it is just keeps going around and aroud thought pictures of meters. I have looked at mmy bluetooh when it is doing this and it says my keto mojo is connected. I am lost.

  37. I have the 071D and it had been working fine since I got it in around April of this year. Suddenly this week it didn’t want to sync. I followed all the instructions here on this webpage, and it didn’t work. Force quit app, power off phone, deleted and reinstalled app. I fiddled with it for over an hour and finally it was working again. This morning I took a reading again and it synced fine with the app, but this afternoon I did again, and suddenly again it didn’t want to sync. It takes the readings fine, and they’re recorded in the device, but when I push the button up on the left side of the device (to initiate Bluetooth), the little blue light doesn’t go on, and the app says that it can’t find the device. So frustrating. Oh, and I changed the batteries, too, but that hasn’t helped.

  38. I have a Keto-Mojo GK+. I press the white button to wake the GK+ and press sync on my iphone 13pro 15.0.2. It reads my latest readings (for example ~5S … down to ~0s) then hangs on ~0s for a few seconds until the device times out. I’ve tried deleting and reinstalling the app and I have the same problem. I tried rebooting my phone and have the same problem.

  39. Meter has reached 995 readings , i have to reinstall to download any additional readings but at the end of the download continues to state 995 readings downloaded. I have downloaded many readings through reinstall and the meter records them but doesn’t count the readings . The meter continues to say 995 downloads and will not synch with out a reinstall. I complained about this issue in the past still not resolved

  40. Can’t sync with the app. Tried clearing cache, reboot phone, then deleted reinstalled app. Still can’t sync. Running Android on Pixel 3xl

  41. it connects and says it’s syncing, but says there were 0 readings imported

  42. I am not impressed with your app and it’s ability to sync with my husband’s iPhone 8 running iOS 15 nor am I impressed with its syncing ability with my iPhone 11 Pro running iOS 14.8 soon to be iOS 15. Specifically it now will not let my husband sign in on his phone but we can sign in to https://auth.us.mymojohealth.com/login online so there is nothing wrong with the user name and password we are using. Please advise. If you want me to delete the app and reinstall – been there and done that!

  43. I am not impressed with your app and it’s ability to sync with my husband’s iPhone 8 running iOS 15 nor am I impressed with its syncing ability with my iPhone 11 Pro running iOS 14.8 soon to be iOS 15. Specifically it now will not let my husband sign in on his phone but we can sign in to https://auth.us.mymojohealth.com/login online so there is nothing wrong with the user name and password we are using. Please advise. If you want me to delete the app and reinstall – been there and done that!

  44. The app no longer works, so I can’t back up my data. Cannot sign into Mojo Health either due to inactivity. No way to log-in.

  45. The IOS app no longer opens! What’s the deal? Upon tapping the KetoMojo icon, the white, circular indicator just keeps circling and circling, but never actually opens the app. The whole reason I bought your meter was b/c it synced with the app which told me if I was in ketosis, etc. Are you going to fix this? Or are you abandoning the app? Serious questions. Please respond

  46. The app is not responding. I can not get it to initially boot up. The only way I can think to fix the problem is uninstalling and reinstalling it. I’m hoping that the information in my iCloud backup will be able to restore all of my previous Keto Mojo readings.

  47. Meter will not show the Bluetooth icon when I push the button (??)

  48. Cannot synch keto mojo to iPhone 6s Plus running iOS 14. Followed your reset procedure to no avail.
    Blue light flashes on Bluetooth connector. But app cannot find device. Meter times out.

  49. my meter keeps showing an E11 ERROR MEASAGE with or without a test strip in. can’t test

  50. Hi
    my app keeps saying
    “Synchronization problem. Unexpected MyMojo Health Cloud Connect synchronization error occurred. Please try again later” How can I dice this ? Previously it was still capturing my readings but today it didn’t.

  51. my meter won’t sync ,It did at first but won’t now I purchased through Amazon I reset abdication to no avail

  52. I tried these options but my app still can’t find my device

  53. Can’t you please list the brand names of the lancets that work with this meter? Thinking that they work isn’t going to cut it. The supplies for diabetes are expensive and once they’re opened, there’s no returning them.
    Plus, my meter didn’t come with the bluetooth so it doesn’t work with the Virta program. Bad marketing & programming considering this is a popular diet program.

  54. I don’t think i ever got the Bluetooth adapter. How can I set this up?

  55. My GK+ monitor has stopped pushing data to my iphone app (keto mojo classic – fwiw, i don’t see any other keto mojo app in the store). It connects and says it’s syncing, but says there were 0 readings imported. This has been happening for ~4 days. I’ve force-quit the app multiple times, rebooted my phone, confirmed the date range is correct. I changed the number of readings saved from 1500 to 2000 in the app settings. Any other tips?

    Fwiw, I care more about getting it to calculate my GKI than syncing – but I don’t think the keto mojo device itself will do that calculation – it just gives me the ketone reading and the glucose reading. If I could get the GKI from the device, I wouldn’t need to sync since I don’t really care about historical data. Is there some button-pushing combo that gets me the GKI on the GK+ itself?

    Also, for the “iphone won’t sync” help page, the info on iphone device and ketomojo device actions seems dated (no mention of gk+ version, either).


  56. The “full sync circle is stuck at just short of a quarter way through….then the meter turns off – “device disconnected”…frustrating!

  57. I have the older keto mojo and I am not able to connect to Bluetooth. Do I need a Bluetooth adapter? If so, where do I get one? Thank you.

  58. I tried all the above in this article, my phone will still not connect to device. When I bought the device a year ago, I didn’t have any problems. I didn’t use it for about 11 months and now I can’t get it to connect. Does the classic have issues with connecting now? And the keto-mojo doesn’t seem to go to bluetooth mode. I don’t see the blue light anymore.

  59. data doesnt sync. performed all recommended steps

  60. I manually entered my keto level incorrectly as 1.3 but should have been 1.8. I want to delete that reading as it throws the trend off. How do I do that!

  61. Not everything is Apple. Bluetooth won’t connect for my Android S21+. I see it listed as a device but has to use app to connect. Using app to sync never finds it. This is for the GK+ device.

  62. hi, I have an account with Keto Mojo, however, it won’t let me log in on my phone with my email and password. It says email and/or password is not valid. Please help. Thank you

  63. I bought a mojo for my brother and he has an android. Can’t get it to sync

  64. keto mojo GK+ all of a sudden not syncing. tried deleting the app and reinstalling. Using current IOS 14.5. the bluetooth Icon on the device is blinking as normal, bluetooth is turned on.

  65. I can’t seem to set up an account. It gets stuck on the password though my password follows all the requirements – 8 characters, one capital, one special character and one number. But it takes me back to the password

  66. My situation is that the synch starts… And at two seconds in it stops synching and says zero data uploaded.

  67. I reached out to the support email hoping to resolve a monitor that isn’t offloading all data, despite monitor saying it has.

  68. directions for my trade in say to synch my old meter. I dont have a bluetooth dongle. Help

  69. I did everything suggested and it still will not sync. This time I got a message that my “device is blocked” and to contact customer service.

    Thanks in advance for your help.

  70. I still can’t got my iPhone to pair with my new monitor. I have done all the troubleshooting suggested. Please help

  71. The advice in this site is not operated for the new Keto mojo dual monitor system which has Bluetooth 4.2 integrated
    GK+ blood glucose & j]ketone dual monitor]ing system

    Bluetooth problems persist and there are no solutions listed here for self support

  72. buenos dias , los datos que pasan al telefono no los puedo visualizar para acceder al indice GKI
    tengo q calcularlode manera manual .

  73. This is a major flaw. Will there be a fix for this? I don’t want to delete my app and lose my data every time.

  74. Give trouble shooting steps or a phone number this is useless

  75. After I did the sink on my iPhone app. It showed 16 data points were transferred. However the data is not showing up on the app.
    I cannot get any summary information or read any of the values. The readings and the trend pages are blank. I even deleted and reinstalled the app twice

  76. call me….only parts the app are not working 3039417282

  77. New meter is not transferring over the results to my app

  78. My GKI is not showing up on my app. Also, my device won’t sync unless I activate blue light, even if I have device on

  79. The app continually states “we still think you are a robot” and will not allow me to even select images to prove I’m not one! I cannot log in or even register my new meter. I have done a hard reset on my phone and it still does not work.

  80. This info is about the old meter, which I didn’t need since it was easy setup. I have followed the instructions on the new meter and the iPhone (ver 14.2) will not recognize the meter.

  81. I don’t want to watch a half of dozen smiley feel good videos. I just want to be able to make the blue light blink on my meter so I can sync with my phone. I tested earlier and I didn’t have my phone nearby to sync. How do I force a sync?

  82. The issue is the with the monitor, not the app on my phone. I’m trying to find how to turn the bluetooth of the monitor on. Seems like it should be more intuitive, either the function or at least finding help. both are way too difficult.

  83. How to synchronize the data from meter to application is not explained anywhere. The old meter I finished my testing and pushed sync on the app and 2 tests were downloaded. This is not possible with the new model, but there is no explanation on how to do it. Being there are 88 frowning faces and 12 smiling on did this answer your question, I can’t be alone in my confusion.

  84. Since the last iOS 14.1 update the app fails to sync. It seems to be having difficulty in deciding which model of GKI meter it needs to sync with.

  85. Dear Customer Support,

    I wish to delete some readings from the device’s memory. But with the app I only managed to delete the readings stored in the app. Thus whenever I sync all the old reading come back. I can’t seem to find any information about this topic. I would be extremely grateful if you could help me to a solution.

    Best wishes,

  86. My NEW GK+ is not syncing. I have tried all of the above.

  87. The device won’t sync even after deleting and reinstalling the app, & powering off the iPhone. Not sure what else to do. It just stopped working last week.

  88. Keto Mojo GK+ is no longer connecting to my iPhone which is running version 14. I did hard set on app. It used to connect but does not even recognize the machine ( mojo) currently.

  89. I have had my keto mojo for awhile. I would sync. Haven’t used it in awhile but now it won’t sync. Tried things on the web site did not work.

  90. I have the newer Keto mojo meter with built in Bluetooth. I went to sync today and it won’t sync. The little Bluetooth light isn’t even coming on the device when it’s on. The app just keeps searching. How do I troubleshoot that without having to retest?

  91. hi,

    the meter doesn’t show in discoverable Bluetooth devices (whilst other devices do) and the keto-mojo app keeps quitting when prompted to sync.
    My iOS is 13.7.

  92. When I login it tells me to verify my email from the email you send but I don’t get an email. Im very frustrated!!!

  93. The Bluetooth on my meter worked the first time I used it. Have not been able to get it to work again. I exhausted all of the trouble shooting tips. I have the Bluetooth 4.0 integrated monitor

  94. This is very frustrating. Device will not pair. I push the side slide up for 3+ seconds and nothing happens. Have restarted app, phone and device

  95. I would love it if a chat function was available so someone could help me with syncing my device. I received (2) emails saying I missed calls from you, but no missed calls were in my log and no voicemails left. Really disappointed.

  96. App is not finding the device, I followed all steps indicated to resolve the issue and it still says searching for device. I dont want to delete the app as I will loose all my history/data


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