I think the problem is about EXIF metadata. Exif metadata are use to know the rotation of your phone when you take a picture. You can try to erase this Metadata before sending them to Amazon. Be aware that default windows image viewer dont use Exif metadata, but you can open with Gimp and you will see if the picture is correct. I think you can try this link to remove Exif metadata: http://www.makeuseof.com/…/3-ways-to-remove-exif…/
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