@david-jones, if you enable the TRIGGERcmd Google Action it should work.
You've only enabled the TRIGGERcmd Smart Home Google Action so far.
I like the Smart Home action better personally because it creates on/off smart home switches for each of your commands, so Google Assistant just has to match your words to one of them when you say turn on X or turn off X. It has a much better chance of matching your words to your commands because it has a list of them ahead of time.