So, the issue is with the UI Scaling, which by the way is horrible, and just goes to lazy developers. You do realize that the text is blurry on 4K Tv's like mine, right? I have to use a mod that is no longer supported: Improved Font: Ampul, anyways.
If you have the UI scaling increased, you can not access the Accept Cookies button. I set the UI scaler to 1, and I was able to use the wiki. The only problem was, I can't read text that looks like something an ant would read, without scaling.
I set the scaling back, hoping that since I accepted the cookies, I would be good. Nope, the message came back, and I couldn't use it.
For the love of god, fix your UI scaling, its horrific. The sad thing, is that if you just used the Improved Font Ampul, that some random guy from China created, you could easily have your UI scaler, scale perfect text, with nothing blurry,.