Initial Setup - Pi3 + Hass.io + Broadlink RM Pro + Google Home

The following link is a good tutorial. You may check what you might miss.

In order to figure out what problem you encounter, you may:

  1. Try to call the script in Developer Tools->Services to check if script runs correctly.
  2. Show your script content defined in home assistant and webhook url configured in IFTTT. I may give some help.