VDownloader Errror Message

Hi everyone. I am new here but I have a problem that is starting to cause me to tear my hair out..I keep getting an error message when I use the VDownloader.Everytime I try to use it I get a message that says: This is not a valid address. Please enter a Google, Youtube or Grinvi URL. I am copy pasting the url as is. It worked fine before..anyone else with this problem and how did you solve it? Thanks
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