After clicking the required quality, it won't start downloading(no response to click at all). I have ummy downloader as well ,in the past while selecting mp3 format for downloading , it would redirect to ummy downloader software and now no response to click on any quality or format . Sometimes  after clicking the download icon  , after like 5-10min , the download would be shown completed . This all started 1 month back if i recall correctly. 

I dont know how to put more details into this situation considering screenshot is useless when no response is generated after clicking on download icon