I’m having the same issue on PS5 but with zero success (see video).
I’ve tried reloading game, reinstalling game and restarting console but no joy. I had an early access code so have been having this problem for a couple of days.
My missus tried her own PS5 today when the open beta launched but she had the same problem. We have tried going on as a party but still no luck.
I reached out on Reddit and this seems to affect a number of people. Someone who had this issue said partying up with a working account sorted the problem for him. He could then play on his own thereafter. I added him as a friend and we tried to play but were kicked back to the main menu as before. When I left his party he was able to play no problem.
I’m new to Battlefield and was keen to try it out so a solution would be most welcome.