Just wanted to pitch in here:

Over the years, I've had 3 different Stake accounts hacked. Each time, Stake support was incredibly horrible at understanding the situation and taking appropriate action. Actually, in two of the cases, they straight up denied the claim that they were originally my accounts, even with extensive proof.

Good luck with this. Stake is known to have very very poor support beyond simple requests, I would take this as a lesson, cut your losses, and move on to another casino.