Add a green button (at the top of the video, in the most inconvenient place) but it sends you to a security risk mozilla page, you can't advance from there.

垃圾

可以，非常好用，真的能本地缓存哔哩哔哩

This does nothing, no green button added anywhere

youtube4kdownloader.comの動作が非常に低速になっておりダウンロードできません

Very useful, if you are in China, please use a VPN

I come from China, and it can't work.

it will go to https://youtube4kdownloader.com/download-bilibili-videos.html when click download button. That web is 404 in China mainland.

When I am following the instruction. It said to me that "An error occured from remote video site. Please try with other download link."