Uninstalled after a few hours. My Firefox had problems accessing some of my regularly used sites (slow or unresponsive). After ruling out Internet connections issues, I uninstalled the plugin and the native app out of desperation, and suddenly, access problems disappeared.
The Ant Video Downloader is OK, but without the extension it is rather useless. We users of MAC have now been waiting for many years, and still the etension is limited to Windows. Come on, Ant R, let's have it!!
Unfortunately, the release of cross-platform version of Native Application is delayed indefinitely due to issues in web extension which should be fixed first. We are sorry for any inconvenience caused and hope for your understanding.