I've read the documentation and searched for others who have had the same problem. Unfortunately, I have not been able to find answers.

I have successfully installed Custom Certificate, created a custom template in Site administration/Plugins/Plugins overview/Custom certificate/Manage templates, then I added the Custom Certificate Activity to a course.

However, I've never seen an option to select a template after clicking on Save and return to course or Save and display. Maybe because there's only one template? That would make sense.

Whenever I click on Download Certificate, the PDF is blank. I turned on debugging but got no errors.

If I understand correctly, once the certificate is issued, the same one is downloaded each time even though I've made changes to the template. How do I as administrator test to see the changes I've made or do I just trust the Save changes and preview button is going to produce all certificates that way?