Yes I also saw that, and finally they found a way out. I think there is no other reason from the casino when they hold accounts or freeze withdrawals other than there is something suspicious.
Well, the problem that I often see is that some people are indeed impatient and they immediately accuse while they "haven't" found a way to contact directly. But this has indeed happened often, meaning some users come to accuse while they know where their mistake is.
It's normal. When a user's account is locked, he will be impatient, of course. They will be afraid of losing funds they win there. When they don't get a proper response or get a late response from the casino, then they panic. Sometimes casinos block from the chat as well. Instead of making a proper solution, they delay or do not reply through the support system.
I have even seen a lot of scam accusations where a few casinos don't reply. They really don't care about accusations; otherwise, they should make a proper explanation about the situation. I admit sometimes users would make the mistake, but the casino should update about the solution or explain the real situation.