In the Google Home app, I want to set up an automation that is triggered by the Tapo D230S1 doorbell. I want the Nest Hub display to show the live camera feed as soon as the doorbell is pressed. To do this, I followed the instructions from the feed: Tapo D230S1 and Google Home speakers.

However, when I try to set up the automation in the Google Home app, I only get as far as selecting an action from the doorbell. There are no options to select though; as soon as I tap the '+' sign, the selection menu rolls in and does not show any options. I have tried tapping and swiping it open with no success. 

(Unfortunately, I wasn't able to insert a screenshot, but I hope I have described everything correctly.)