Trouble with adding experience to an API KEY

When editing an API KEY it does not allow me to add an experience to it at ALL.
To further explain what I mean, when adding an Access Permision and selecting universe it asks you to search for an experience. When attempting to search for an experience it does NOTHING when you hit enter. I thought “Maybe it means to put in the experience url” , when that that didn’t work , “Maybe the universe id” . Still no results.

Im out of my witts here ,can someone please help me?