In password security, the longer the better. With a password manager, using more than 24 characters is simple. Unless, of course, the secure password is not accepted due to its length. (In this case, through STOVE.)
Possibly indicating cleartext storage of a limited field (which is an absolute no-go), or suboptimal or lacking security practices.
Meh, if they lock you out after X attempts, then 6 digits is fine. Hell, even 4 digits is fine if they have a lockout-policy.
Do they have a limit on attempts?
So long as attempts aren’t per IP and or ipv6 isn’t allowed
And as long as they don’t have an unknown database leak, negating the attempt limit.