Hello, there is no technical possibility to download video with sound in this format.

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

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

Hello, what exactly does not work?

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

Здравствуйте, скорее всего Вы пользуетесь браузером Google Chrome.
Зайдите в настройки Tampermonkey, включите режим настройки «продвинутый»,
пункт Downloads BETA, дальше Download Mode: browser api
Перезагрузить ТМ.
Скриншоты: https://drive.google.com/drive/u/0/folders/1lkLJG_e2d5aezpjd13lsRle4kxjMUIPC

Hello, please, send us more details regarding the problem.

Hello, can you send screenshots of your actions?

What is your OS?

What’s your country?

What exactly and where do you download?

Hello, we’d like to help you, but we will need some info about your browser and the installed extension first.
Please, go here http://en.savefrom.net/user.php?info=1,
copy the details that you see and send them back to us.
Please also send us some video links that you can’t download.
Thank you for contacting Savefrom.Net support !

Hello, we’d like to help you, but we will need some info about your browser and the installed extension first.
Please, go here http://en.savefrom.net/user.php?info=1,
copy the details that you see and send them back to us.
Please also send us some video links that you can’t download.
Thank you for contacting Savefrom.Net support !