How to open pgAdmin 4? I've installed and am trying to open pgAdmin 4 on my Macbook Pro. However, if I right-click it and select "Open", nothing happens.



Then again, if I try to re-download pgAdmin 4 and drag that into the Applications folder, I get an error message saying that pgAdmin 4 is already in use:



So how do I 'use' pgAdmin 4? The screenshots on https://www.pgadmin.org/screenshots/#1 suggest that I go to localhost:5050, but that just gives me a 'Connection refused' error. Then again, I seem to recall it working earlier and opening a web UI in a new tab in Chrome, so why am I not seeing that now?
I just closed pgAdmin 4 in the Activity Monitor and started it again. Then I see a new tab open up with pgAdmin 4. It apparently is running on a different port (63467) than shown in the screenshots.