Multiplayer BP - Client Can't Receive Input

Hello, I am trying to make a basic multiplayer setup using only the Third Person Character template and the AdvancedSessions plugin, but whatever I do the client character can’t move or receive any input upon joining the server session. I went through numerous tutorials, forum/reddit posts and tried everything I found but I can’t solve this issue.

Hosting the session is being done in the GameInstance with the following:

Clicking the join session UI button calls the following:

Which calls this from the gameInstance:

Then I use the OnPostLogin event in the gamemode BP to spawn and possess player character:

Client is able to connect and both players see each other, and the client can also see the movement of the server player, but the client itself can’t move or do anything:

Any help/insight is much appreciated! Thanks