Hello, unfortunately we can not help you, we do not know why this happens.

Hello, please give us more details.

Hello, Yes, we are aware of this issue. And doing our best to fix it ASAP.
Thanks for using our resources.
Best, SaveFrom.net Team

Hello, in order to download MP3 from Youtube you need to install our program Ummy Video Downloader,
Also with the help of it you can download videos in high quality with sound: https://videodownloader.ummy.net

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

For the better understanding it'll be great to see a screenshot with the error.

In what capacity are you downloading the video?

Do you download via the extension SaveFrom.net Helper or the website SaveFrom.net?

Hello, Reinstall the extension after an older version is uninstalled. The current version is 7.58:

http://download.sf-helper.com/mozilla/helper_last.html

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

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

You can not download only this video?

Hello, you have the Vivaldi browser, we do not support it.

Our extension without problems supports Google Chrome, Yandex browser, Mozilla Firefox, Opera Stable, Safari.