Log in some water or food in MFP and see if it goes over to fitbit, and check in exercises and see if there is a Fitbit calorie adjustment line under exercise. if that is missing then fitbit is not talking to MFP if the food and water is missing then MFP is not talking to fitbit, it can go down both ways or only one way, with either you can disconnect them and re-connect, I believe there is a post further down that says exactly how, or sometimes if you just disconnect MFP and reconnect it works without doing all that if the problem is just MFP not talking to fitbit.