I guess only Roobet can answer this, they are active in the community so most likely we will see a reply soon.
Based on the email you presented as evidence, I was surprise that money from mixing service could result to blocking of account, I think mixing would only make bitcoin or any crypto to be more anonymous, and I think it should not be question?
I will wait for some asnwer...
Mixers make Bitcoin more anonymous, and that not be a problem, orever I don't have used any mixer or some other methods, a lot of my deposits come from Binance exchange...
Come on Roobet, solve this easy, I only want my money, you can't stolen your users like have made with me.