Cannot control Rainbird Zones via UI

Hi, I am very beginner into Home Assistant. Have done some basic Automation using the UI, but not very familiar editing configurations manually. I tried to integrate my RAINBIRD controller (+ LINK Wifi unit) into Home Assistant. Although the zone switches appear in the entity list, I am unable to control them via UI. A message explaining the switch does not have a unique ID. I think I have missed something in my setup. Can you please help to point me to the right direction?
I utilized these guidelines:
Rain Bird - Home Assistant (