Unreal.
What happened to your lawsuit against Stake?
So if you were from any other country (excuse me, any country that didn't expressly forbid online gambling), you would have just accepted your losses and moved on, right? But because you are from Switzerland, you feel entitled to get back your losses since you discovered (after the fact) that gambling was illegal there.
The solution is for you to stop gambling. That is the best way to ensure that you won't lose any more money.
I offered them a 80% settlement on my net losses and even willing to sign a NDA but it didn’t even came so far to talk at anyone at Roobet as per their emails, they refer to their ToS or the last link you see above.
This just screams unprofessionalism on the highest kind of level.
An "NDA" over that? Actually it screams extortion attempt, TBH.