it doesn’t work to do release update to Katalon Studio Version: 5.6.3 from Katalon Studio Version: 5.6.1. It will just redirect to https://www.katalon.com/ and ask for downloading the full version. I’m using a mac 10.13.6.
But I can do release update to Katalon Studio Version: 5.6.3 from a Windows 10 machine.