Locks to one, and only one, Azure account! I should be able to sign out of one tenancy and into another: not possible! Sign out of one then say sign in and instead of asking for credentials or account it simply chooses the one previously used. Total failure on this point alone!! No, I won't be bothering to email, it's a comment on lack of product feature that is stupid so there is no error message. Shows that no person reads this, just a bot!