I’m the add-on maintainer for GNU IceCat.
Legacy extensions are no longer supported by Firefox and thus also no longer available on AMO as describe at https://blog.mozilla.org/addons/2018/08/21/timeline-for-disabling-legacy-firefox-add-ons/
However, I really need to see the titles of the legacy add-ons at https://addons.mozilla.org/en-US/firefox/collections/11536848/legacy/ – it’s blank, but https://addons.mozilla.org/en-US/firefox/collections/ says:
I could not even see the legacy add-ons when clicked on the Edit this collection link.
Not only that, I had added references in the comment field for a lot of add-ons in my Legacy collection that described if the developer planned to merge the legacy to a WebExtension or not. I cannot access this any more.
I need to see their title so I can merge WebExtensions from it to my other collections.