Child Actor component not replicating to Clients

Hey guys,
i have some room prefabs which is essentially a Main Blueprint with a bunch of child actor components. In PIE everything shows correct. But over LAN or Steam Multiplayer some child actors are only visible to the server… The room itself (the parent actor) is replicating though. I tested every combination of component replicates, turn off replication in the child actor and so on. I don’t know what i am doing wrong here… Is there any “correct” way to properly replicate child actor components?