No email being sent

Need some help. Tried asking GlideAI, but it just go round i circles.

When a user registers, they choose which postal codes they want. When a user then makes a post, they enter the postal code. I would like to send an email to the users who have chosen the postal code that the new post is entered with. How do I do this via workflow?

In user table I’ve made

In Post table i’ve made this

Then in Form Submit I’ve made this workflow:

But no email is being sent. And Zero runs.

What am I doing wrong. It did work at some point, but can’t get it to work now.