Thanks so much for your post and for including an attachment. Let’s figure out what might have happened with your upload.
Is your upload file a CSV or an XLSX file? Since you are including images, the best approach is to use Google sheets to create the list and then export it as an XLSX file. When including images, XLSX is the preferred format. If you haven’t yet, I recommend taking a look at the formatting guidelines for bulk creation in Figma Buzz.