Tracking Button-Clicks not working, using Trigger, Tags, Goals

I’m trying to track site interactions. Therefore, I started with tracking button (Jump-Link) clicks. I followed this help section: It seems incomplete.

  1. I created a goal - how to configure the goal is not specified.
  2. I created a Trigger in Tag Manager. This should fire when the button with the href=“#comparison” is clicked.
  3. I created the tag and configured it as described in the Help Section.

The goal doesn’t get tracked. Also, preview mode is not working.

I also created goals with a simple purpose like tracking outgoing links, those get tracked and show up in the statistics.

This is my page: Preview mode is ?mtmPreviewMode=XspHwwDs