If you have that much money, shouldn't you have 2fa enabled to protect it?
the OP did say that he has a 2-factor authenticator and a 23 random character(not sure what that is).
(Before anyone say compromised I wasn’t I have 23 random character and two factor authentication)
-snip
the thing is, you did authorize it, according to your email. in their point of view, you authorized the tip, the change of password, and the deletion of the account. if you are not the one who authorized it, it only means that your account has been compromised and according to their ToS the gambling site will not be responsible for the loss of the account or the funds.