The video i linked answers all of your questions
You can’t do it on the same computer unless you do it the way he does
You have to use the AdvancedGameInstance provided by the advanced sessions
The answer is undo everything he didnt do in the video, make sure everything is spelled right and in the right place in your config and it should work provided your either using two different computers or use some kind of app to get around it
If your having problems in your game that’s down to replication issues