If your survey reward hasn't arrived, it's usually for one of two reasons:
You responded using an email address that isn't the one registered on your CoinsBack Casino account.
The username or email field in the survey wasn't filled in correctly.
Make sure you complete surveys using the same email address linked to your CoinsBack Casino account, and double-check any fields asking for your username or email before submitting.
If you've checked both and your reward still hasn't been credited, contact support and we'll look into it.