1. If you have a lot of data(workout syncs ranging over 2-3 years) uploaded already, it is better to create a new id.
2. If your new ID is not accepted after a factory reset, you need to "Create one". But, at the credentials screen, only
specify a new screenname. You can use the same old email id.
3. If you get a message saying, the ID already exists, go back and then change the username/screenname.
4. It will work after a while.
PS: I have changed my credentials after recording this video. So, do not try to login :)
