The most thing that makes me crazy about online is delay in withdrawal and kyc requirements, ie failure to verify kyc details when submitted to them and lastly delay delivery of deposit. What I don't really like is after winning and they published your winnings like not secure while dealing online so everyone casino should limit how to publish people's winning.
Apart from the delay in withdrawal there is another type of delay that drives me crazy. When you chat an one representative on an issue that could be resolved immediately from admin, but they will tell you to wait for 48 to 72hrs. For goodness sake it is annoying, just check your admin and solve this problem without making me to wait for another 3days.
I can feel you mate, I have the same issue as well and it took more than 72 hours to be resolved. It was about a withdrawal that I requested and they said that I have to bet 1x of my deposit and I actually did.
And it took time for them to really see how much I already bet and that I should have been allowed to make withdrawals. And the thing is that I think they knew that I could have been given the go signal to withdraw, but I have a feeling that they don't want me to, and they want me to bet again and again.