I tried to order your product this evening. Wanted 12 months of Pro. PayPal wouldn't let the transaction go through for some reason. I tried it twice and then called them. They said it was a "security issue" and that their system was automatically blocking the payment and wouldn't allow it for at least another 24 hours.
Just thought you should know. I was able to confirm that it wasn't something on my end. The PayPal rep looked over my account and said it had to be on your end. Might want to call them.
While I have you, one question: I'm running BP and BB without group integration. Your plug-in supports bb in the configuration, right?