Greasy Fork is available in English.
Creates the option next to edited and deleted Reddit comments/posts to show the original comment from before it was edited
< Feedback on Unedit and Undelete for Reddit
What do you mean by doesn't work?
Pushshift is only available to approved moderators, you can request access by following the steps at https://redd.it/14ei799/
If you get approved, you can use your API token in version 3.17.0+ to continue using the script. That's the best anyone can do for the time being.
Seems even with the apparent reopening of Pushshift, this script still doesn't work. Wish there was an alternative...