Starting a flow from a momentary switch - Shelly i4

The preliminaries:
Homey Pro early 2013 version 12.1.2
I am having problems with the attached flow
[Test Flow|640x93](upload://qIvvJGWx4lMH1iGL1DSZAQOfa3h.jpeg]
It is a very simple flow…
A short push on the momentary button 1 connected to the Shelly i4 should turn on a group of lights, the problem is that it doesn’t.
I also have a flow to turn the lights off, double push button 1.
Testing the two flows from the desktop app works.
When testing with the button no response.
I have checked the Shelly i4 it is wired correctly and has power at all times.
Any help will be appreciated.

Which flow?