Have you read their TOS? Does it says anything about scenarios like the one you are going through? Because there are some casinos that are very clear about not helping at all in cases like this one and they are not afraid of letting their customers know they will not even bother to recover those coins, I say this because in the case Bitsler actually has the policy to help their customers you can use this in your favor in case the support does not even knows their own TOS and eventually refuse to help.
So far there's nothing mentioned there so it's a 50:50 chance of OP.
I saw some post with the same issue of OP
I lost my BCH money when deposit to Bitsler.
I copied the address from Bitsler site and made deposit but nothing in my account, no balance, no transaction.
Then I asked in chat box, someone told me "dont worry, we are trying to fix" and then, stil nothing.
I asked a support by email and they replied "you sent to the wrong address, that's not our problem".
Then my money gone

Hope it will be fixed though, since OP is somewhat a regular user.