In your Ann image you used https://www.rainbet.com but in your signature you have https://rainbet.com/ without the “www.” When I tried accessing your site with your signature it worked perfectly but when I added “www” I was blocked by cloudfare.

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Edit:

I just tried it couple of times and it didn’t show again which means it was just a coincidence.

same script / template as other tons of casinos, i suggest to invest some in a unique design, otherwise, your site looks like a clone of many many others