GoAffPro provides you with the option to set parameters for the referral link of affiliates.
To set parameters for the referral link of affiliates, go to the Advanced section of the Settings tab in the GoAffPro admin panel.
Here, go to the Referral Link Parameters section.
Now, enter the parameters that you want to set for the affiliate's referral link.
After this, click on Save.
The parameters that have been set will get added to the referral links of all the affiliates.