Hay Chris,
I have been experiencing the same issue. After the app update I lost all of my workout history so was told to delete the app, forget the device on Bluetooth then reload the app.
By doing so my credit card was removed from my wallet. Attempted to re add my credit card which came up with a whole lot of error messages. Spoke to Fitbit support, delete the app again, delete the cache, forget device on Bluetooth again, reload the app and try again. No good.
Speak to Fitbit support again, they say someone will call me. No one does. They send an email saying someone will be in contact in 24 to 48 hours. Nothing.
So finally call today and they say that there is nothing they can do to resolve the problem and they will refund my original purchase price of my Fitbit. They cannot resolve the issue due to the updated app and problems associated with credit cards not being fixed in the foreseeable future.
I have been with Fitbit for over 10 years. Lose all my data etc but I don’t care. They have lost the plot. Happily take my refund and off to the shops to buy a garmin or Apple Watch. 👋 👋
