[2023] Presets and more

Subscriptions to the Paradox mod site or the Steam workshop ought to work the same, I can't explain the difference you see there. Has it always been like that for you?

I've never used the rules or presets, but I imagine if that was a known problem we'd see other such reports here! Again, has that ever worked for you?

Can you test both these on any other machine you might have access to?  

Ursus Mursus said: Mods from subscription works, but mods in Documents folder don't

But subscription mods end up in the same Paradox Interactive\Crusader Kings III\mod folder as manual ones do. I suspect you might need some help from the modding community in how to get manual mods to work! One option is to publish them in the Workshop then subscribe to them, of course.  

Ursus Mursus said: Steam mods files are in Program Files (x86)\Steam\steamapps\workshop\content.

When you subscribe to them, yes. As soon as you run the launcher they are then copied to Paradox Interactive\Crusader Kings III\mod