I do not understand, describe in more detail.

¯\_(ツ)_/¯

Hello, at the moment you can download the video?

Thank you for the information.
Our developers will find out what could be the problem and try to fix it.

Hello, we've found the solution how to make Savefrom work in Safari.
Install the Tampermonkey extension: https://safari-extensions.apple.com/?q=tampermonkey
Install the Savefrom script: https://download.sf-helper.com/chrome/helper.user.js?ts=1537523278787

Savefrom.Net downloads mp4 video

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

Hello, Subtitles can only be downloaded if they are connected to a video and not created automatically.
You can download them via: http://en.savefrom.net or SaveFrom.net Helper (extension).
Subtitles can be downloaded in an xml format.

Hello, we do not understand you, please describe the problem in more detail.