Recent change on UI break your UserScript. I dig little bit more on your code and found short-link class to bind remind me button but recent change remove class short-link.
So to fix the problem you must change below code inside function process_page(posts).
Replace:
$("a.short-link:contains('share')").each(function( index ) {
with:
$("a.js-share-link").each(function( index ) {
Please update your repo.