Alright then maybe it's due to the PSN ID itself then, the PSN ID has to be created in the same region too.
If you try to play online in a different region from your game disc, your PlayStation Network ID, your DLC code and/or purchased online content you may encounter issues.
If the region codes of all of these do not match, then the user is unable to play online or access the online content purchased from a different region.
