Dear goodness this is the closest I've been in a while to swearing.
I'm having the issue where I'm stuck on the Press Enter screen. I installed Identity Provider, even XBox Game Services. I made sure everything was working; PSO2 has access to my Live account on the website.
But when I press Tab, nothing happens. I'm not signed in, and when I press enter, or click the button, nothing happens there either. I don't even get the option to sign in. It just says to press tab to switch accounts.