Welcome to the community!
I believe you should be able to view the status of your referral here. That said, have you verified your eligibility for the program? You can view the Terms & Conditions of the program here. You can also view additional information about the program here.
If you would like to query a specific referral, you would need to contact the Refer-a -Friend support team.
You should note that the forums are community-driven and not intended as a venue for customer services. If you have other specific account issues, you would need to contact customer service. In addition, they can also be contacted via Live Chat, Facebook, or Twitter. Those methods can be accessed via the contact page posted above.
Hope this helps 😀