I think everyone wants to say that it was a good site but lately they started blocking accounts without explaining exactly the problem, just showing paragraphs on the site.
On a simple search you will see that there are many complaints, especially 2019. They follow blockchain transactions, even look up to phone numbers used on google.
If you win a lot it follows a real nightmare, skype verification, selfie, etc
It still cannot be considered a scam but you have to be careful playing small amounts, at large amounts you will have problems, however they hide after the coin transactions and you have nothing to do