Ok. So, I've had this loop going on for hours. Added the Xbox Identity Provider, Xbox beta app. restarted PC. uninstalled and redownloaded. I was finally able to get it to work by downloading the Xbox Console Companion ( I don't even own an Xbox btw). Then open it, it'll prompt to login and then launch PSO2 with the console companion still open and logged in. Hopefully, this helps some get in.
Converse with fellow players