Woohoo! I posted, then deleted my original inquiry because I had the same problem, but I was able to solve the problem by changing my primary PayPal email to a different email than my Admin email. Now I did a test purchase and didn’t have any problems with registration. All the auto-redirects worked perfectly, forwarding me to the right upsell page after the first purchase, and the right thank you page after the second purchase. Best of all: when I purchased the upgrade (from the one-time-only offer page) the plugin automatcially upgraded my membership level. Presto! Perfecto! Love these plugins.