There are way too many rules to check and if people gamble without checking a single one of them, they are going to break at least one of them unwillingly. Not because they want to break the rules, but because they did not know the rules. It is vitally important to check ToS before you gamble in any place. Then people come here and complain about how their money is "gone".
This is why I believe that we will keep on seeing a lot of people who will claim most legit websites are "scams" because they did not read the rules and they broke one of them and their money was confiscated because of it and they will call it a scam instead of realizing they broke the rules.
The most important thing before playing on a website is to check how legit they are. I always have the impression that if you don't have multiple accounts, don't place crazy bets, exploit bugs,... then you will get paid (i.e. huge sums) after verification if it is a legit site. There are some sites that will not pay out any winnings at all, but if you do some research you know which sites to avoid.
Better just check the validity of the casino on the forum itself. One can understand the legitimacy easily in the Gambling section and how successful are they doing by reading the discussion itself. There are many casinos which are not legit and multiple accusations and zero payout is the biggest proof for this. Now I don’t want to go off topic as this is Duelbits thread. But I can surely confirm that this is one of the legit casinos and is like 4th in my best casino list. I have played few times, already got paid. The cashier is also easy to use with multiple payment options. I have no doubts on them for sure. Plus this is also having those Games and Rounds series active all the time. So definitely legit.