This is most likely down to your digital camera settings. When a digital camera takes an image it stores "EXIF" data that relates to the camera, exposure, DPI, rotation etc, pretty much any of the settings that relate to this.
You've probably seen it when you upload an image to your computer from a camera or to facebook and you have to rotate it. This is because the EXIF data is telling the computer the settings the camera originally took the photo at.
If you rotate the image using a program then this info is usually overwritten or added so that computers know they should ignore the original. It appears that iPads do not pick up on this and read the original EXIF data.
To amend this issue you will need to remove all of this information from the image via your computer (not Create) and then re-upload it as a new file.
In order to do this, please follow the steps below: