"No results" in DJ Pro AI on MacOS

hi I bought djpro for macOS, but search option not working good,i mean I have my music in my external hard drive and put my folder music to “my files” section in djpro.When I try to search track not finding all but if I get in to there folder that I searched this track and then back to the main folder and search again djpro will find this track but is not option to do that for all folders.So I need to put my music folder to "my collection " section to the djpro ?