Sketchup STL plugin - where to download

I’m not able to download the Sketchup STL plugin from the Extension Warehouse.

Any highlighted area I click sends me to a list of plugins which, when I click on the Sketchup STL plugin, sends me to the Sketchup STL page
which, when I click on the github URL, sends me to the github page
which, when I click on the Sketchup STL URL, sends me to the Sketchup STL page, etc.
Any suggestions as to how to get the plugin?

Ok, I think I got it. Apparently one has to “sign in” to get the plugin page to show a “download” button.