So long story short, i made some winnings in sports betting in a few casinos, out of them all, only 22Bet.com and Wazamba.com arent allowing me to withdraw (22Bet.com) and "are processing the withdrawal" for over 8 days already.
This is called sportsbook arbitrage and is generally not allowed, if an operator finds out that you're placing similar bets on several operators, it can decline the withdrawal of your funds.
Many crypto casinos that have a good reputation in this forum, why play on a less well-known platform?
It's easier to do sportsbook arbitrage on lesser known platforms and win.
I thought BetB2B were only concerned with selling software to create gambling site.
If what you say is true, then I believe that there are more sites that we have to be cautious about - few weeks ago a thread was created with a list of site that used the BetB2B and since since BetB2B owns 1xbet and 1xbit is it also safe to say that they own they others in that list? I’m kinda curious.
Look at this

If you right click on image and open in a new tab, you'll see it in higher resolution. There is a text under BetB2B logo -> by 1xBet <-. BetB2B and 1xBet had the same color on their logo for years. If you ask them, they'll deny but I strongly believe that they are the same. BetB2B creates a CMS, runs casino 1xBet and probably the same team also creates dozens of casinos under BetB2B CMS and run casinos to try and scam as many people as possible. Isn't it strange that almost every casino that runs BetB2B CMS, are scams? I think it's the same team.
I posted the list of casinos in that thread that you are talking about -
https://bitcointalk.org/index.php?topic=5493037.msg63995737#msg63995737I personally wouldn't gamble in any casino that runs betb2b cms.
We just had three weeks full of igaming conferences and you could see everyone mingling with... well, everyone.
Now, I can't say for sure that the platform and operator aren't owned by the same people, but I know for a fact that sharing booth costs or promoting your providers on that booth is a common practice.