[PC, Epic][0.90.11][Multiplayer] Multiplayer won't work properly

So, we both have the game on epic, and when we try to enter on each other’s server, we reach the life raft after the first scene, and the game loads, and whoever is the host stays and the other disconnects

We just get to the life raft and it disconnects

We tried everything, and the only thing that helped was the host using a VPN, but neither of us can buy a VPN…