Client Broken After 12/03/2020 update
So, I get the whole thing, can't possibly effect addon settings, blah blah, but I'm going to break everything that happened down in order. Addon settings [were] only part of the problem anyway.
So I had originally installed elvui manually, then installed tukui client to keep it updated. That was awhile ago. I spent days on days modifying everything just the way I wanted it. Today I exited wow to update regular addons besides elvui/tukui. No problem there, loaded back into the game. I was just about to queue for dungeon when I thought I'd better exit and make sure elvui was up to date as well. At this point everything was perfect.
I exited and opened the tukui client. It asked me if I wanted to update the client as there was a new version out. Sure. Well, I waited for it to update and then launched it again. Immediately I was asked to log in. I was a bit confused and upset and hit cancel, as I don't have an account associated with tukui. However, after I clicked cancel, the tukui client appeared. Elvui had disappeared from the list of addons. The "intall elvui" button was greyed out and unclickable. I loaded up in game, thinking fuck it, they'll probably update and fix it later. Now, at this point less than five minutes have passed since I was in game and all addons, including elvui, were functioning properly. The server has not gone down for maintenance, there have been no updates to wow randomly at 11am central time on a Thursday, nothing. I haven't downloaded anything. I haven't even opened windows But I logg in and all settings for all addons were gone. No profiles for any of them, not prat, not adibags, not details, not elvui. I was pretty upset. I may have shouted "FUCK!" at my monitor a couple of times. So much time put into that set up. Anyway.
So I did a quick google search and quickly happened across the suggestion to uninstall the tukui client and elvui addon both and reinstall. So I did. The "install elvui" button in the tukui client was working again. And it magically restored all of my addon settings. Scratch your head on that one.
However, still having the original problem. Which is that while the newly reinstalled tukui client successfully reinstalled elvui and somehow solved the addon settings issue, the tukui client STILL is not showing elvui in the list of addons, meaning I cannot update it which is the whole point of having the tukui client in the first place. I've tried reinstalling it again. And of course closing and reopening the program. Also the "login" dialogue box pops up every time now. It's fucking obnoxious. Poor design choice. Please undo lol.