Nostalrius Begins - Quality wow vanilla realm (1.12)

For some reason my addons do not work, when I log in there's not even the addon option that you would usually see when you install new addons. I installed them correctly according to the website but nothing works. I tried re-installing the game and even deleting the addon folder and creating a new one(Idk if that's probably the problem). Hopefully someone could help me and resolve this problem. Thank you

Your WoW folder directory should look like this regarding addons:

World of Warcraft Classic\Interface\Addons\<all your addon folders>

Are you sure you created a folder labeled "AddOns" with an "s" ? From your original post, it sounds like you only made it "AddOn." Also, there can't be any extra layers of folders between "AddOns" and the addon folders themselves. Like if you unzipped/extracted addons from a zip or rar file, you have to copy/paste the folder that contains the addon files themselves, not the unzipped/extracted folder.

A correct addon directory would look like this:
World of Warcraft Classic\Interface\Addons\Auctioneer
World of Warcraft Classic\Interface\Addons\Bagnon
World of Warcraft Classic\Interface\Addons\Questie

An incorrect addon directory would look something like this where there's extra folders padded between the directory:
World of Warcraft Classic\Interface\Addons\Vanilla Addons\Auctioneer
World of Warcraft Classic\Interface\Addons\Addons\Bagnon
World of Warcraft Classic\Interface\Addons\Questie\Questie