Localization to other languages does not work. Checked it in several languages. Only variables are translated into the appropriate language.

Wrat of the Lich King Classic - Deutsch:

@Lucelarius only things that we have translated can be displayed https://github.com/DFortun81/AllTheThings/tree/master/locales

So unless people from the community are able to make translations there wont be any.

@Lucelarius only things that we have translated can be displayed https://github.com/DFortun81/AllTheThings/tree/master/locales

So unless people from the community are able to make translations there wont be any.

At first I thought that there was no translation. But then I started comparing it with “en.lua” and realized that other localizations were not used. Only those strings that are specified in the localization by variables are localized in the game.
I checked several localizations for which there is a translation. Neither option worked.

It seems the Russian translation is more complete:

But the pop-up description text doesn't even match "en.lua"

Classic doesn't use the same locales as Retail, and the only text translated is provided by volunteers of those locales.
https://github.com/DFortun81/AllTheThings/blob/master/classic/locales.lua
Feel free to push up a PR of additional locale strings! :)