Hello, Reinstall the extension after an older version is uninstalled. The current version is 6.95:

http://en.savefrom.net/user.php#helper_install

Hello, please give us more details.

What exactly do you download?

Hello, a download manager, we have no relationship.

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.

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

Thank you for contacting Savefrom.Net support !

Could you please send a few links you can't download. We will check it out.

Hello, in order to help you better I need the following information.
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

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.

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

Thank you for contacting Savefrom.Net support !

Hello, please give us more details.

Remove Tampermonkey.

Install Chameleon extension.

Install the extension here in these links.
Google Chrome. First 1 then 2.
1. Install the extension Chameleon: https://chrome.google.com/webstore/detail/chameleon/dmpojjilddefgnhiicjcmhbkjgbbclob?hl=en-US
2. Install the extension Savefrom.Net: https://addons.opera.com/en/extensions/details/savefromnet-helper/?display=en

Hello, this is not easy to fix, we can not unfortunately, it depends on the browser.