@iamagloworm: Attached is a beta of the plugin that should do what you want.
The issue with adding the "Age Level" in that way, was that it did not match the structure that "_append_tags" expected. I had to handle it separately. Also, the code for the Genre, Classification and Time period had changed, so they were not working either.
The beta has the following changes:
- Fix: Updates for site changes
- New: Add option for getting "Age Level" and putting it in the tags.