Does your project have a Project Name in the Project Settings? SteamVR in the other machine may be identifying them as as another UE project. You can remove any entries with “ue” in {program files} \ steam \ config \ steamvr.vrsettings to reset.
Does your project have a Project Name in the Project Settings? SteamVR in the other machine may be identifying them as as another UE project. You can remove any entries with “ue” in {program files} \ steam \ config \ steamvr.vrsettings to reset.