I’m trying to upload the cover of the book that I wrote. The website is press.barnesandnoble.com. I open the folder with the images and they are not highlighted. You can only choose a highlighted file. It is lighter grey and unclickable. I saved it in Pages, Documents, and My Files but you can’t use My Files to upload it. How do I get my cover for upload? I’m going crazy with this and I need to upload my book cover for publication. Thank y’all.