you can ask on their forum, maybe their representative want to reply you.
Probably they won't receive any response from the support by creating a topic about their issue in BC.game forum. I have seen several topics regarding this matter on their forum. User receives this error message if their account gets blocked for abusing the bonuses. I have already told it to
VahidLeo in my previous post. Perhaps, none of them have any deposited funds stuck in their account.