If the issue you're reporting is listed below, it's on our radar and under investigation. Where appropriate, we will note any temporary workarounds, and update the article as more information is available. Please accept our sincere apologies for any inconvenience caused by these issues. In all cases, a fix is in the works.
If your issue is not listed below, please first try to unlink and relink the two programs, as this often resolves unexpected issues. If that doesn't resolve things, please send us an email about the issue so we can address it!
Bug: Calorie adjustment keeps switching to Withings, even though another parter is selected for Steps
Bug: Logging Calories in Garmin Connect take you to the MFP website instead of the app
Bug: Unable to connect Samsung Watch
Bug: Entries copied from friend's diary don't sync to Samsung Health
Bug: Exercise is not syncing from Endomondo
Bug: Some Withings users are reporting their weight entries post a day off in MFP
Bug: TrainingPeaks getting errors when attempting to link accounts and not syncing
Bug: Step count not syncing from Google Fit
Bug: Withings/Nokia Health Mate weights inaccurately syncing to MyFitnessPal
Bug: Unable to link MFP and Garmin Connect from either side
Bug: Unable to disconnect Fitbit from MyFitnessPal side from within the apps
Workaround: Unlink via the website. Apps tab > Your Apps > select Fitbit > Disconnect
Bug: Notification for completed cardio exercise not posting in user's news feed
Bug: Samsung Health steps not syncing. Users report an error when navigating to the steps section in MyFitnessPal
Bug: Duplicate exercise entries from S-Health
Fixed in 21.18: Bug: Google Fit keeps disconnecting
Fixed in 21.14.2: GoogleFit and MFP is not syncing any data - Once you update to 21.14.2, you will need to unlink and relink GoogleFit to your MyFitnessPal account in order for sync to resume. Please note that while weight & exercise calories are now syncing, there is still an issue with step count not syncing.
Fixed: Galaxy Watch/Samsung Health steps shown on the Home Page of the MFP app do not match the Diary/Progress section
Fixed: Erroneous Calorie adjustment when manual exercise is added (SHealth, GoogleFit, Apple Watch/iPhone)