It is against the T&Cs of MrQ if you deposit from a joint account. They will confiscate your balance and close your account if you are SOW’d/AML’d. Please see the following thread for details.
Mr Q dodgy shenanigans! Refused withdrawal and retained £1200 - Casinomeister Forum
Mr Q dodgy shenanigans! Refused withdrawal and retained £1200 - Casinomeister Forum