I love the optimism but you don't have the depth of understanding how malicious a person can be just to make money, people are faking a lot of things every now and then, what's a fake license to them but just another gig to prey upon innocent people. Picture this, if you're that person that owns an illegal(unlicensed) casino and you can get away with it, you'd be doing all the work to make sure you make the most out of it right? Pretty sure that you're going to be doing that, no way that you'd just let that kind of thing slide. Lack of proof is definitely a red flag for me in a casino but it's difficult to not show your license as a casino because some of the players would be asking and most of the time it's easy to show it in your FAQ or About page so not showing them is a bit counterintuitive to do so.