As described in the help pages, Remember Me 6 makes a difference between a user login and its connected verse accounts.
- A user login consists of e-mail address and password
- A verse account has an account name that you can edit in menu/Account and some settings like language etc.
In Remember Me 5 an account was both user login and verse account. They are separated in version 6 because many users have got multiple accounts (for the kids, for memorizing verses in Greek or in Hebrew, for memorizing French vocabulary etc.) and had to login with different credentials for each account.
Therefore in Remember Me 6 accounts are treated as simple verse accounts without any login credentials. That is why account name + password works in Remember Me 5, but not in Remember Me 6. In order to use your Remember Me 5 account in Remember Me 6 it needs to be attached to a Remember Me 6 user login. On Remember Me 6 you log in with your e-mail address and (new) password and all your connected verse accounts get synchronized.