koobas.hobune.stream
which field to enter UPID
which field to enter UPID in "Edit > Project Settings > Player" 
From what I can tell, this field is no longer there and the new way to connect to your account for this is through the Services window (click on the cloud icon or go to Window->Services). Once you choose an organization from the drop-down menu, you can then choose "Multiplayer" or other services and connect your project to them. I was able to get matchmaking to work without manually entering my UPID anywhere.
But what can I do, if I need to re-setup the whole project and need to enter an existing UPID? Where can I enter an existing UPID in a project? When I go to the tab settings in the unity-service window I can unlink the project, but this does also not allow me entering my exiting project ID. When I try to rename the project to my existing project, this also fails...
found a solution:just delete the projectsettings.asset then you can enter an existing UPID.
