~snip~
The only answer to the OP question was the license commission or on the department of anti cyber crime on the complainant country.
Here is how to report international gambling fraud.
https://www.wikihow.com/Report-Illegal-GamblingAnd here is where to report gambling fraud.
https://www.ic3.gov/Home/ComplaintChoice/default.aspxBut always remember to have compiled all strong evidence you have and that is very needed to prove on their fraud activity and quickly shutting down by the authority was there were caught. Most likely file complainant does not want to proceed because this is a very long process though there are too many cyber crime authorities who will help you but there is no guarantee.
You can also file complaint about crypto gambling site if you have bad experience with them?
If we already have this international court then its good for all of us since we can be more secured dealing on gambling site and hopefully they really support cryptosite as well. Cases like this really takes a lot of time and will consume a lot of money, so be more patient and have your funds ready to speed up the case at least.