1st mistake is saying it can't convert the video to mp3 because you need to pay for more powerful infrastructure by joining the "pro" tier. Yeah right lulz, just use clip grab.
2nd offense the plugin doesnt work anyway no matter what format you try to download. All videos fail.
I have fixed this and you will receive an update via auto addon update in firefox once it is reviewed there. If you are on Google Chrome or Microsoft Edge you need to manually update by visiting this download page.
It's disheartening that many satisfied users don't leave reviews while a few unsatisfied ones do, that too after using it for years but not working for few days :(
