If disconnecting and reconnecting the accounts doesn't help, i would ask over at MFP. 9 times out of 10 when this happens it an issue on the other app's website.
Best AnswerYou need to link your Fitbit account and your MFP account. See https://community.fitbit.com/t5/Third-Party-Integrations/Third-Party-Apps-Informational-Post/m-p/144...
I tried everything and it still won’t work. Even tried contacting MFP but didn’t get a response.
Best AnswerIf your having issues syncing with MFP please see @MarreFitbit's post that is found on the previous page here.
Basically
Revoke avcess
Link up
If still they still are not taking, contact MFP.
Best Answer