Hello, Unfortunately, we don't fully understand you... please. provide us with more details regarding the issue.

Hello, In order to download MP3 from YouTube you need to instal our Ummy Video Downloader. This useful tool will help you download
both HD and MP3 from YouTube: http://videodownloader.ummy.net

Hello, thank you for contacting support in Savefrom.Net
This bug is known to us, we will try to fix in the nearby future.

Hello, in order to help you better I need the following information.
Please, send me the information listed here: http://en.savefrom.net/user.php?info=1

Optional: send us screenshots of how you download a video.

Thank you for using our extension SaveFrom.net Helper

Hello, we will consider your idea. 

Thanks for using our products!

As we understand at the moment with the extension you have everything in order.

Hello! Our help will be more effective, if you copy and send us info about your browser and the Savefrom.Net extension:
http://en.savefrom.net/user.php?info=1
We'd also need some links you can't download (to test them).
For the better understanding it'll be great to see a screenshot with the error.
We are waiting for your reply, and thank you for contacting us Savefrom.net Team!

Hola, nos gustaría ayudarle, pero primero necesitamos información sobre su navegador y la extensión que tiene instalada.

Vaya aquí http://es.savefrom.net/user.php?info=1,

copie los detalles que se muestran aquí y envíelos de vuelta.

También envíenos algunos links del video que no puede descargar.

¡Gracias por ponerse en contacto con el soporte de Savefrom.Net!