PlayStation playstation online not working!

[teabug]

hi guys! ◡̈

we are in such a. pickle. there’s four of us wanting to do a co-op farm. two of the four have no problems joining anyone, the only people who have problems is me and penguin (lol that’s my nickname im gonna give her)

whenever i host, penguin cant join. and whenever penguin hosts, i cant join. but everyone else can join just fine?

when one of the other two people host, if penguin joins first i can’t join, but if i join before her then she can’t join.

penguin plays on a ps4 and i play on a ps5, but the other two people play on both and it works just fine.

everyone’s on version 1.6/1.6.9, everyone’s playstations are updated and everyone has playstation +

please help us!!! we so totally want to play it’s so devo :’( does anyone know what to do?

thanks so much! <3

***edit to add***
- we have tried inviting each other from the settings on the game
- we have tried inviting each other from playstation friends
- we have restarted our internet
- restarted the playstation
- uninstalled stardew and reinstalled again