That's the Xbox Companion app trying to load up your account. Note the NO USER in the bottom left corner. When I had that issue I solved it by closing the grey box and hitting enter again, but it was showing my user name properly.
You might need to hit Tab and try "changing" accounts(just select whatever your account is). If nothing loads up, close PSO2 and try opening the companion app itself. Mine has broken before and that's usually what causes this. I don't have any experience with the tweaker but I've heard it sometimes has issues with this. Maybe someone else who knows about that can reply.