I can't select save or I can't get off the crop screen?

If you find that you are unable to proceed further when editing a design. For example cropping an image and your screen looks like this: 

You are most likely zoomed in too far. All you need to do is zoom out and you should be able to see the save button. If you are on a PC you can hold down CTRL and scroll with the mouse. This will enable to you zoom out and see the save button or if on a mac it's just command and +/-