and I have noticed here an unusually large number of reports of fraud to AdkinsBET. although some have resolved positively.
I give them an
offer to mediate and check all of his evidence from this case, but still, nothing is happening.

It's very possible that AdkinsBET had some bugs on his platform, and fraudsters use it abundantly.
Was following that case and the impression i got is that you were talking to Adkinsbet and not the OP.
You wrote
''@AdkinsBET I have never used your platform, I haven't any connection with your casino so I am completely neutral. if you need to show evidence to someone and don’t want to go in public or here, I can check it for you.''Think you should make it clear that you are asking the OP's if they accept you as a mediator.
I am interesting to see OP response to your offer as well.