Firstly, I want to thank the Community and Developer for creating this plugin. After a little trial and error and reading between the lines, I got it installed and working on a development area.
I do have a couple of questions that I hope can be answered:
1) Does this actually work with the PayPal Sandbox? The reason that I ask is that I have properly configured the Settings -> Payments to call an active and functioning PayPal API which is associated with that account and the money is not arriving in the Sandbox business account, even though the Sandbox user account indicates that the transaction has been completed.
2) If the existing member has a different email address for PayPal, the plugin appears to create a new user "on the fly" for Classifieds. I think this could be a bug?
As a long-term PayPal user who has multiple Paypal accounts with different email addresses, I know that I frequently buy something through site where I have a membership and, when I am redirected to the PayPal Express Payment screen, I'm able to see the transaction amount and description, as well as choose which PayPal account I want to use to pay for it. After the transaction has completed, I am redirected back to the membership site and the credit/payment is visible in my account at the membership site immediately. This is not the behavior that I'm witnessing using the PayPal Sandbox to test this plugin.
3) Even with the new accounts created on the fly, those users credits are not showing up in their "My Ads" screen so I am a little baffled.