Thank you for this plugin! It's great and easy to set up.
I did notice though, when selecting a new download icon, it shows that it is "saving" and the plugin gives the "File updated successfully!" message, but the shortcode still spits out the download link with the default icon.
What can I do to fix this, or is this a bug? Or, is this feature only available in the Pro version, at which point, I would recommend removing it from the free version as having it there is misleading.