According to their support agent, CAO stands for Country Authorized Operations. I sent them a screenshot that displays the error when accessing a slot game which means the game is not available in our jurisdiction. Some providers cannot offer certain games in our country due to license restrictions. They do not have influence on that. Sadly she does not know the specific reason for this.
How can it work properly, if I dont change my location, device or internet provider, open same games that from same providers, but on MonkeyTilt I got that error, but in the other casinos I dont. I can open 5 browser tabs with Sweet bonanza in 5 different casinos, and only on MonkeyTilt I will get an error. I think this is a serious issue for casino, because gambler wont spend a lot of time figuring out how to solve that, they will move to other casino.