We regret to hear that you faced issues with Ethereum payments being declined, causing you to switch payment methods. It is indeed a strange situation. We have passed on the information regarding this issue to Woo Casino for resolution!
Woo Casino - Crypto depositing problems
Case summary
I selected Ethereum when they suggested to pick a preffered payment method. For some reason, it was declined every time I tried to insert my money, so I had to switch to another system.