This is the reason why it is good to always be active and regular to constantly checking on your investment, assets or funds even platforms where you belong because there are always updates and information that could be of help to you if one is in such a situation of this nature.
If you have the funds in any of the gambling sites, it is important to keep active on the site and know about its latest updates and news, so that you don't miss put on any important information.
I keeping funds in the custody of a third party is the last thing I will ever do in this space. Be it casino or exchange, I would never make such a mistake. I have learnt several lessons enough to make me know that any funds or assets not in my custody does not belong to me and as such not your keys not your assets remains my reminder.
As you have said, it is pertinent that one keeps a constant check on their various casino website they are registered with to getting current updates on happenings so as not to be taken unawares of developments with respect them being a member of such platforms.