Hi,
I am facing this problem even after following all these steps. I bought the ps4 recently and accessing the game via EA Access subscription. Fifa 19 works, but Battlefront II still gives the 5020 error whenever I am trying to invite my friend in the co op mode.
Me and my wife are having 2 separate PSN ID and EA ID but only I have PS Plus. Both playing on the same console. The objective is to play together, whether Co Op or Online Multiplayer. Nowhere I am able to get the second player added.
I too have a Telstra Smart Modem and already did all the steps mentioned, DMZ, ipv6 etc.
Can anyone advise about the final solution if achieved or whom should I be taking this up with ?
P.S. I am facing the same trouble in other games like Uncharted 4 while Fortnite works.
I think you need 2 consoles to play online together. I have 2 and my son and I play online together.
