I am having the same issue. Bought from Gamestop, got the PS4 version, stopped working yesterday. Didn't know there was supposed to be a prompt that pops up when you log in, but... where do you have to log in exactly? Logging into my account from my PS4 doesn't create the prompt neither does logging into the game itself. I recall downloading the "add-on" as well that I was told about that's with the related items for the game, but that didn't help at all.