Avada and Sunshine

I don’t have access to Avada 6 to see what is going on. My guess is the Avada theme has JavaScript errors in the admin which break all other JavaScript on the page – including Sunshine – preventing it from working. JavaScript is needed to do the browser-based image upload. You can always try the FTP upload method – https://www.sunshinephotocart.com/docs/how-to-create-a-new-gallery-via-ftp/