Hi. This is not a rare problem of players and how to avoid it I do not know, but I know a site https://gamegavel.com/blocking-systems-at-the-casino-how-to-avoid/ where they describe all this problem and its solution. For example the reasons for account blocking at online casinos, can you be banned for winning an excessive amount of money and so on. I myself have recently stumbled upon this site and it has helped me a lot and now I perfectly understand what my blocking is about.