Stake does not work with this register sadly. In my opinion Stake really has to tighten their responsibile gambling. Maybe perform KYC checks upon depositing instead of letting them play and on a big win start asking for KYC.
You can't compare a crypto casino to regular fiat-based platforms who adhere to strict regulations. People involved with crypto don't want strict control. They especially don't want to undergo KYC. Requiring KYC after a big win is an excuse that many platforms use unfortunately. But again, due to a lack of regulation, that has become a normal thing in this space.
I hope a representative will jump on this thread soon to help solve the issue, since their support is only making things worse.
I don't think you should expect too much. You let your guard down and you gambled. Would this thread have been created if you won $70.000 instead of the $7.000 that you lost, for example? I don't think it would.