Co-op (Saints Row: Gat Out of Hell)

Earlier I created a topic about a coop glitch in Saints Row IV, and now this problem has migrated to GOOH.
Spoiler When connected to a friend, it flies to the menu and displays: "you were returned to the main menu, since the session is no longer available"
And once I played over the network and everything was fine, and now it gives an error. Suspicions fall on the provider and Steam. Tell me what to do? Have you faced such a problem?