Hey thanks for building this.
I gave it a try on a few mods. I used the "direct download" method. It seems only a few will generate teh "Activate" button but because of non compatible dependencies it's generally hard to get most mods to work.
I tried: "additional backgrounds" "enchanted background" "fantastical races" a few others like 5E spells and UI mods. I couldn't get any to activate with the code as is. Let me know if you update it and I'll try again!