Will, when I upload my pics, sometimes they are turned sideways. I then delete the pic from the site.
Then I open the pic on my windows computer into any editing program (I use the standard Windows program that came w/ my Windows 10 dell). Edit something minor (such as shading, lighting, etc.) which will now allow the pic to "save". After clicking "Save", just re-upload it to the CSite. Magic--it's upright!