! PayPal subscriptions were completely, horribly, awfully broken. Took me two days to find out it was a frigging underscore replacing a dash during a rewrite (not mine). Thanks to Maxx and MultiformeIngegno for their multiple fake-donations that allowed me to finally spot it! (Subscriptions-PayPal.php)

+ Added some extra error messages in places where the PayPal subscription verification was unsuccessful. (Subscriptions-PayPal.php, ManagePaid.english.php)