Hello, please give us more details.
"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:
Customer support service by UserEcho