Fitbit

If MFP and Fitbit are synced but you are not seeing Fitbit steps, on the MFP mobile app go to Menu > Steps, or on the web version go to APPS > Steps, and make sure Fitbit Tracker is selected as the Step Source.

If MFP and Fitbit are not syncing at all, read through the below articles and follow the steps.

Try turning off bluetooth on all your mobile devices to ensure no connection, then unlink MFP and Fitbit and relink.

If you still have trouble syncing the Fitbit, then I would recommend opening a Case with Customer Support on the MFP Help/FAQ pages... http://myfitnesspal.desk.com/customer/portal/emails/new

​Please see these articles, and search for answers to Frequently Asked Questions and other helpful articles, on the MFP Help/FAQ pages...

https://myfitnesspal.desk.com/customer/en/portal/articles/1427466-what-if-data-doesn-t-appear-to-be-syncing-from-fitbit-to-myfitnesspal-

https://myfitnesspal.desk.com/customer/en/portal/articles/1840064-fitbit-steps-integration-troubleshooting-for-"steps"

https://myfitnesspal.desk.com/customer/en/portal/articles/906763-why-am-i-not-getting-a-fitbit-calorie-adjustment-

I had that problem too. I uninstalled the MFP app and reinstalled. Made sure the steps was set to Fitbit and it worked fine after that.