First of all, thank you for this great plugin. I used the old certificate plugin until today, but since last update certificate borders are removed and plain pages left.
Therefore, I decided to use this new plugin. But I have another problem. Everything is set up and working except for the file name. When I click "View certificate" button, it shows a download window and the file name is just pdf. No extension. I know that it works when I put .pdf extension manually, but some of my students don't know this.
How to resolve this issue?