Found out that the photo checker is smart enough to ignore any rotation information in the photo and even if your computer correctly shows the ratio that still doesn't matter to the photo checker.
- Even if the aspect is 3:4 or you can divide the height by .75 and that should be the width, or multiply the width by 1.3333.
- Even after I set my phone to take 4:3 pictures (Samsung S4)
- Even after I used windows to to rotate the image clockwise and anti-clockwise in case that was the issue.
- Even after I had tried with 3 different cameras taking 4:3 photos.
The photo checker still failed to accept the image I supplied and complained about it's aspect ratio.
Finally if I opened up the picture in paint or a photo editor of your choice and resized the photo to 95% (I suspect 99% would have worked too) then the photo checker accepted my image.
That's a few hours of my life I won't be getting back.