Why doesn't work the move and scale for the photos when I'm about to use them as a wallpaper?

Why your wallpapers look messed up on iOS 7, and how to fix them!

http://www.imore.com/having-issues-wallpapers-ios-7-heres-why-and-how-fix-it

How to Change iPad Wallpaper and Grab or Save Images from the Web

http://portables.about.com/od/newsandviews/ss/iPad-tutorials_5.htm

You could use the free Instafit app https://itunes.apple.com/us/app/instafit-post-photos-to-instagram/id591706840?mt =8

 Cheers, Tom 😉

Move & Scale was disabled by Apple, starting with iOS 7. Whether or not it was intentional is unknown. Please load up the iPhone feedback with requests to fix it. Maybe some day Apple will fix what they broke.... that was working already.