This issue is not solved, I was on holiday.
I have used the conflict check and only activated the newest EDD Plugin (2.9.8) as well as the newest YOAST Plugin (9.2.1). The problem still exists, it is not possible to select a primary download category for a single download.
I don’t see where the theme could be the problem since it worked perfectly up to YOAST version 8.1.
Thank you very much for you quick response! Ok, I understand the problem and I go along with what you say.
Maybe you could implement a second, more aggressive compression methode that can be activated for certain images types in the config page. With that function it would be possible to compress the preview images more than the detail images.
