First please don’t paste screenshot, instead use the preformatted text function of the editor and paste the actual text. (on mobile sometimes it’s too hard to see tiny pics)
That said. There’s a from: null clause in your trigger. I suspect that’s your culprit. It means it will ONLY trigger if it comes from a null state. (which I sincerely doubt it actually is - therefore never triggers) try removing the entire from: null line.
If it still gives you trouble. Pull a trace from the automation and post it (with the preformatted text block)