Hi there, same problem here but I have done a bit of a work around...I have a site where users need to take the training yearly, so I have set their enrollment to expire a few weeks before the the year is up, which deletes all their users records and they start with a clean slate again - so the certificate reissues.
I also have the certificate to print the date the final test was taken... I don't know if that makes a difference or not.
I must say though, it's hit or miss. I have had to go into the database several times and update the certificate date manually as this doesn't always work, and I was just coming here to post a new comment for help.
It would be very nice to have the ability to set the certificate to update from the settings, as I think this is something a lot of us can use.