Hello, like the name of the program you want to buy?

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!

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! 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!

Hello, in order to help you better please, let me know me the name and version of your browser and version of the extension,
all can be found using the following link: http://en.savefrom.net/user.php?info=1

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

Hello, unfortunately we do not have such an installation method.

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

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

Hello, Ummy Video Downloader only supports downloading from YouTube. 
In order to download from Facebook 
and many other websites download and install our browser extension SaveFrom.net Helper: http://en.savefrom.net/user.php

For a refund, write to this address:: support@ummy.net