PayPal Pro cannot receive payments from aMember Pro due to an incompatability with the API. The security clearance message comes up so many times while trying to register, that people give up. There is another major problem as people are rejected from making any kind of payments. Attempts to stop the bleeding by sending out free coupons to the few people who write to complain don't work either. The passwords are denied by aMember Pro. Users show up as paid in full, but haven't actually paid, and can never get access. My entire customer base went from 12 million regulars to less than 5 people in one weekend. We're done.
I have had a simliar problem. No payments are accepted by aMember Pro. The Security Clearance script comes up so many times it scares people. The API rejections in red that show up really spook people as well. We went from 12 million customers to 5 people in one weekend. A complete and total disaster.
Unfortunately, we have not received any tickets from you, so I cannot say how to resolve these problems. Lot of customers here have PayPal Pro integration working, so saying "aMember Pro is incompatible" is little ... incorrect. Also, I don't understand what is Security Clearance script, but I guess you just had http:// links to images while located on https:// page. And as my 5-years expirience suggest me, no reasons may cause 12 million -> 5 peoples. It is something fantastic.