Stake is allowing you the opportunity to withdraw your initial SOL Deposit of 74.999 SOL. You may login and withdraw this at any time - however afterwards, your account will be permanently restricted.
You should do it right now, firstly. that would be around $16,500 (almost half of the amount in question). After that you can go ahead and handle your case as you please if stake is not enforcing and NDA agreement with you.
It is a good gesture from Stake's side to return the deposit amount even after you got failed in their fraud prevention system.
Card counting in 8 deck shoe, hmm interesting, I am not sure if casino can reveal much here to avoid future exploitations.