If in your other sites works then you should check if you are using the latest version of PokaTheme and of course cache. 🙂
If the issue persists please send me a link.
The issue is that you haven’t add an affiliate slug to your affiliate link.
This is not optional and you should follow the guides you will see below the field.
(One word, no spaces and no special characters)
After that it will work just fine!