Doesn't work with Safari 10.1.2

"Download" button under the video does not give any options at all. If I go to the site savefrom.net and try to download, I get a message "Failed to make the request. We recommend you to install Ummy Video Downloader to download from YouTube in 1 click." Does it mean there's no free option any  more?

Reinstall the extension after an older version is uninstalled. The current version is 7.49:

https://download.sf-helper.com/safari/helper_last.safariextz?ts=1505304489297