HeroTracker--is this script working?

I installed the Hero6e character sheet, which recommended two api's.  I don't seem to be able to get the second one, HeroTracker, to work.  If I type !ht --help in the chat box, for example, I get nothing.  It looks like it was last updated in 2018, so I wondered if it was out of date or if there is something simple I need to do to make it work. I am a new pro subscriber, so there may be something else I'm doing wrong, but the character sheet is working fine.

Fixed.  A browser setting was preventing the API from starting up.

Patrick S, What did you do to fix this? I'm having the same problem and I'd be grateful for any advice. Thank you.

I use Firefox with NoScript, and it was blocking the appearance of the "Save script" button at the bottom.  When I allowed through the missing web sites, the button appeared and I could save (and thus use) the script.

Thank you!