how do I add a chart to my flashcard deck on uworld, when I use the phone app, it works fine, you just click on it and then add. However for the desktop app that doesn't work, when I click on it, I don't have the option to add to my flash card deck

When I am selecting to Highlight it appears a little box, it says Highlight or flash card, and click flash card. It won't work, uninstall and installs the new Java version