Hey man, I had the same problem, but! I have a fix.
I read in one of the replies about going to another Battlefield to get past the User Agreement screen, however, I did it differently.
I went to the EA website, created an account on there via the PlayStation login, got it setup. Then I restarted the game and boom, everything was fine and unlocked.
I hope this helps anyone and everyone who wants to play Battlefield 4, but doesn't want to buy, download, or borrow a different Battlefield game.
this worked for me as well, thank you.
