I just updated to the newest version of the plugin after having a problem, but the update did not fix the issue.
Today I received my first purchase through this plugin. The money went in to my Paypal standard account, but the purchase gets stuck at "pending". The download link never gets emailed to the customer.
I updated the plugin after reading some of the answers here, then ran a test purchase myself. Again, Paypal receives the money, but the transactions just stays "pending" and never send the receipt email and download link. It appears that the plugin is never notified that the payment has been completed.
Please help! Thank you.
Plugin version: 18.104.22.168
Wordpress version: 3.4.1
Website hosting: 1and1.com (linux server)
Payment processor: Paypal standard