Hi @mwilson1, welcome to the forum, and sorry you are having trouble accessing your MyBT account.
The email and BTID password should be the same. I would suggest that you follow the Forgotten your login details? option to change your BTID password and then log in. If that works then check via the manage email page that the email address you use for the BTID is linked to your account.
Let us know how you get on.