I encountered the same problem and it’s very weird. After I pack the game exe, the remote ctrl service can also access and I can only read properties of actors (it’s movable), but can’t set them or call any functions of them. The response is 400 and said ‘the function SetRelativeTranslation not exist on xxx’. It surely exist in edit and PIE mode. Does anybody success to modify actor properties or call functions in a packed exe game? Or anyone knows is it not possible certainly? Please help…