Hi, @techgirl25, I haven't actually heard of this, but if you are having a problem with your Fitbit it is always worth giving it a restart. After that, if it doesn't work it is best to get in touch with Customer Support (contact.fitbit.com) and they will talk you through your options.
Sense, Charge 5, Inspire 2; iOS and Android
Thanks Julia!
I tried restarting and no change so I'll contact support.