Hello there xD

I've been trying to work out what's up with my UI for a long time. And i have some UI's in my AddOns folder. But i dont have that option in my character selection to load them up. And i dont know what i'm doing wrong.

Any advice?

Imagine you want to use an AddOn called "AddOn1"
Your interface folder should look something like this:
Interface\AddOns\AddOn1\AddOn1.lua
Interface\AddOns\AddOn1\AddOn1.toc
Interface\AddOns\AddOn1\AddOn1.xml

It sometimes happens that when you unzip an AddOn it makes an extra subfolder, resulting in something like this:
Interface\AddOns\AddOn1\AddOn1\AddOn1.lua
or
Interface\AddOns\AddOn1\Interface\AddOns\AddOn1\AddOn1.lua

and that would result in the AddOn not working, in turn resutling in the AddOns button not showing up in WoW.