Login Failed when I activade Elvui in Addons

Hello everyone! So, I came across a strange problem.
As I was playing, I noticed on the login screen when I got into my character, that it said in the text box "ElvUI is out of date", the usual update message. So I went to Github to update it. However this time when I extracted the new ElvUI into my addons folder, I now can't login anymore?? Everytime I try to login to a character, my game just freezes, and eventually shuts down. Either that, or I get the "login failed" message upon logging in, if I've tried too many times... Anyone else also got this problem with ElvUI?

- I DID try to completely delete ElvUI from my addons list. If I do that, I can connect to all my characters. Even if I just disable the ElvUI addon on the login screen where I see all my characters on the realm, then I have no problem loging in to my characters... What to do???