Hi Danbp, I actually just looked into gravity forms more after I sent the message. I emailed their support team so I will see what they say. It looks promising though – thanks for your help!
Unfortunately that doesn’t work as I intended. It creates a widget on the side (that is somewhat buggy), however it doesn’t automatically subscribe people to aweber when they register for an account in my forum.
I have done a lot of digging and have found that gravity forms can integrate with aweber, though I’m not sure how this would work with buddypress. Can you use gravity forms to replace the buddypress default registration page?