Server Travel Not Working

I’m making a new post because my previous one was a problem that has evolved into this one and that post has been lost in the ue4 archives. I solved it using sessions and such, but I want to move all my players from my “lobby level” to my game level and I can’t use open level because that disconnects the clients. From what I’ve seen ServerTravel is the way to go but it is just doing nothing for me. I’ve tried doing different spelling but nothing is working, help?

Welp I fixed it. It seems literally every tutorial does it wrong? If you have the same problem just watch this. [UE4 - BP Tutorial] Multiplayer Session - Level Travelling [6/7] - YouTube