I am beginning to despair with this plugin.
After the 4.1 update everything worked fine. Now I come to test the site this morning and something is broken again.
There is no verification from PayPal, the download page just continues to refresh every 5 seconds. Sorry, PayPal has not confirmed your payment yet, please wait the screen will refresh in 5 seconds!
So Customer has paid but no download link available.
Has the recent WP updates affected the plugin?
And yes I have tried reinstalling, switching on and off PayPal verification to no avail.