I find no enjoyment entering and exiting The Blind Well multiple times to get no results. My suggestion is to just utilize the guard at the entrance before the staircase. Make it so you can talk to her and you can start a matchmaking process with other players so people aren't wasting their time and halting any progress trying to be made in the game.
Thank you
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Same 'trick' as in court of oryx an Archons forge : go SLOW around the last corner before the stairs. The game tries to matchmake you but if you are too fast and there are low player numbers in the forge it will give you your own instance