Idk, never had an issue with CCP installs but any related issues ive had were solved by using a proper browser and always closing it between those kind of screens or clearing cookies first. Its prob local issue is what im saying. Go back to defaults. It prob wants a cookie idk. I hate Edge but it works better than Modzilla/Firefix on things like this.
My original browser was brave browser. Now I set default to edge, cleared all cookies on edge. The error message popped the same even after I run it as administrator.