Actors do not replicate when using sessions

I have followed Multiplayer Shootout showcase and tried to replicate sessions part for my own project. I can create a (LAN) session, see other sessions and join one. My problem is that, for some reason, actors do not replicate. If I simply open map, for 2 players, they replicate without any issues. Is there something else I should do to enable replications when using sessions? Thank you!

Game Instance Blueprint

Game Mode Blueprint

Hello, thanks for responding to my question. In mean time I have identified several other problems within project. When I try to join a session, it actually has an error:
LogNet:Warning: Travel Failure: [LoadMapFailure]: Failed to load package ‘/Game/Maps/UEDPIE_2_Arena2’
And I noticed that total number of players in map does not change, it’s like each player is playing on a different instance of map. I’ve added pictures of relevant blueprints. Hope this helps! Thank you!

Hi ionutt93,

We’re going to need to see more information to figure out what might be happening here, I think. Which Actors aren’t replicating, Characters? Do they not replicate on Client or Server, or both? You mention that they replicate as expected when map is open and you Play in Editor with clients set to 2; when does this not happen? A packaged project?

If you can take some screenshots of your Blueprint Graph setups, including your widgets, that you’re using, or if you’re able to tell me which parts of Multiplayer Shootout project you’re NOT using, we might be able to see what’s going on. Thanks!

After further researching travel failure bug, I learned that error was caused because I was playing game inside editor. I tried game in Standalone mode and replication works as expected.