Even if I roll back Firefox to an older version, it was shown "info_player.response is undefine" and not working

não funciona mais.

It doesn't work, doesn't show on teh toolbar.

O tamanho do painel não está compatível com a versão 89.0.1 do Firefox. O item "Download Painel" retorna "info.player_response is undefined". Por fim, o complemento não é completo em si, o item "Conversion Tool" requer o complemento "Media Converter and Muxer - Audio Tools por InBasic"

extremely slow!!

It is a very strange UI/UX, mostly for converting into MP3, not for video

It's a joke. Doesn't work.!!!!!!!!!!!!!!!!!!!!!!!!!

720 максимум! дальше только видео...

Worked perfectly; now aborts _every_ time

It's a joke. Doesn't work.

I highly suspect this add on of loading malware address which the antivirus catches. Many of the add ons on firefox are dangerous for security; the vpn misuses our facebook and so on.

You're forced to download a lot of crap to make it work correctly, others do the same job better without having to install anything

STILL cannot do video PLUS sound..
will not do ytube 'raw' eg spherical for 360

Do not work: "Batch downloading is interrupted."