I installed the WP-Stamper plug in. I set up the manual stamping. I also integrated the paypal and inserted a paypal button. But I have a problem. The payment goes through but I never get the attachment PDF file... I tested it many times and I also checked the codes and everything looks right...
Encryption is broken. Works when doing a manual stamping, but does not complete when stamping after a paypal purchase. The stamped fileis generated, but the encrypted file is only partially created and the new file does not end up in the stamped files list in wordpress.
Encryption off, the stamped file successfully shows up on the stamped file list when using paypal, but the email is not sent. Using email WP Mail Log plugin to log all the email send requests, it doesn’t appear the call to send email is ever made.