[....]
It's hard when you compiled a lot of referrals and you are sharing your rewards with your affiliate to motivate them to continue playing, if you are going to pick another casino you'll have to build your affiliate again and promote again but that's how things go on affiliate marketing, you have no control if they want to change the terms, even top casinos are changing their terms your only choice is to also change your terms on your reward program.
It's tough to keep that 10% running but if OP still maintains that reward for all his invites then I don't think he'll have a difficult time in another casino. I believe he already has a good relationship with them and I'm pretty sure they have some group chat or other ways to communicate. The question is whether he can find a legitimate one that offers more than what he pays and allows him to earn good as well.