Hi! Yeah, in my mods folder, both files are showing up, are there any other files that are supposed to show up?
They're too many folders deep.
I don't know why you have another Mods folder inside your Mods folder but this is what's causing the game to not see WonderfulWhims correctly.
A correct install path would be Documents/Electronic Arts/The Sims 4/Mods/!WonderfulWhimsMod, any deeper than that and the game won't detect the mod!