Review for URL Link by AlainCh2
Rated 3 out of 5 stars
When I click "install in Thunderbird" nothing happens
No error, but no add-on in the installed list as well
That sounds like an addons site problem, but I can maybe help pin it down if you email me. Please raise issues via github, though, and not the ratings mechanism, I don't always see these.
To create your own collections, you must have a Mozilla Add-ons account.