website

at the url https://www.4kdownload.com/it/products/product-videodownloader?package=installer&source=videodownloader&architecture=x64&download=true&os=ubuntu and here https://www.4kdownload.com/download the download should be the 2.1-2 version, but it's still the 2.1.1
so it's pointer goes to https://downloads.4kdownload.com/app/4kvideodownloader_4.1-1_amd64.deb
and Ubuntu Software Center, of course, says INSTALLED.