The My Certificate module - Show button to send certificate

I am using the My Certificate module, and the module itself is working. I am finding issues with the "Show button to send certificate" feature though. The feature works in that I get a pop-up to send the certificate, and the email is sent. However the certificate that is attached is of zero length, thus there is no certificate to open.

Is this a known issue? Am I missing something in the setup?

Any help is appreciated.

Thanks for the bug report. I just tested, and can confirm this is not working in newer Moodle versions.

I have already created fixes and have it working locally, so they will be included in next release.
If you want me to send you the modified files so you can get it working right away, just send me an email to antonio at joomdle