Greasy Fork is available in English.
Plays a bell sound when you burn an item
< Feedback on Wanikani: Burn Bell
(trying to update the rating)
Thank you for bringing this to my attention! I'm glad your issue resolved itself. However, to avoid this happening again in the future I have updated the script to use a base64 encoded string for the audio instead of a remote url. Hopefully you shouldn't have any such issues again :)
Unfortunately the script is currently not working because the audio file is inaccessible (due to an expired SSL certificate for *.catbox.moe).