Unavailable with Party

Since the season 1 launch my friends and I have been unable to play together (PS5) in an in game party. We can party up but are unable to launch a game mode of any type, receiving the “Unavailable with party” error message. We have tried several work arounds that are successful only 10-20% of the time. 

I can play the game by myself but not in a party/group as it’s meant to be played. This has made the game which had for me a great start to now fall to an unplayable state. 

Please address this error as quickly as possible.