So that part of the flow doesn’t run.
I have a ‘Then log to Google Sheets’ card directly attached to the ‘When 90 minutes before’ and ‘When external webhook’ triggers, and it shows those triggers working (see pics in my 1st post).
As there are three WHEN cards on your canvas, I would say there are three lines, three flows, involved. So when you say the flow does not work or not work or not proces, it is totally unclear what does not work. You have to describe your tests a little bit more concisely.
Most likely things stopped working to some update. In that case you have to test and exclude which parts are working to find the part and chart that does not work. Then in a separate flow you can experiment how to get that chart working again.
When adding loggings, I would suggest to use the simple “Message” card and simple messages, to prevent adding extra problems.
And as stated before, the lamps are always dimmed to 1% as the transition value 1..100 is nowhere used. So your flow has never worked!
So far, this seems to be the solution.