Thank you for your response. I did update the plugin, clear the cache on the website and the issue is still there.

Thank you for responding back. I don’t think it’s working. The website is iw.edu. If you go there, you will see another search icon – that one is WordPress’s search function. But if I add it to the Primary menu, I see the icon, but it’s black and when I click on it, it won’t open to the text box. When I try to add it to any of the other select menus, it doesn’t show up. The options are Primary, Split menu left, split menu right, mobile menu, Header microwidget 1, header microwidget 2, or bottom menu. I am using The7 theme that I purchased on ThemeForest.net. I can use the shortcode and add it to the middle section of the header, but it only shows the textbox, which takes up too much space.