It has the correct addons for my Retail tab, but not my TBC tab. Was more just wondering if this is cause the addons I use haven't been updated yet? the addons it's showing installed, are not in the Addons folder nor have I ever used these ones.

It's showing:
Pat UI TBC
Hydra UI
ElvUI_LuckyoneUI TBC

What should be there:
RedtuzkUI
AddOnSkins
Project Azilroka

Blizzard has reconfigured the file paths.

What used to be classic is now TBC
Classic is now classic era

Delete the ElvUI addons from classic and download the ones you want for classic and /or TBC

Strange, since the file paths I have are:
_classic_ (This folder had Classic and now has TBC in it)
_classic_era_ (This folder got added, has nothing in it since I didn't download classic era)
_retail_ (The addon's are showing correctly)
So the file paths didn't get changed on my pc, just one got added. So that still doesn't explain why my Tukui Client is showing addons installed in the _classic_ folder that I've never used before. I removed them in the client, but not sure what addons got removed.

Classic is now TBC
Classic era is Classic.

So what was classic yesterday, is now Classic TBC

So the addons you have installed in your classic folder are for classic not TBC Classic.

Delete or move the addons from classic to classic era

And download the addons you need for TBC