The self-exclusion feature is there to protect you and it's meant to force you away from 500 Casino, so don't click it unless you really want to take a break.

We won't interfere with self-exclusions set by users, no matter what, not even if you change your mind.

Keep in mind that while in self-exclusion, you can still spend your balance normally if you want to withdraw. You won't be able to deposit, play or collect any rewards.