This is how your puzzle was detected, there is a second blank spot where part of the wing is supposed to be. The solver generally works best in DirectX with higher brightness settings.
When you click the screenshot feature (or press alt+2) it will upload the selected area and give you a image code that you can share in-game, it will also put the image link on your clipboard. If you typed out your image image code in-game, someone else can press alt+1 while hovering over it and it will open this image.
http://runeapps.org/i/b7db.png (This link was also on your clipboard)
It being unable to find the puzzle is a whole different issue, if you're using the Alt1 toolkit it usually means that it failed to capture your screen properly. There is more info in the Alt1 settings, under the capture tab.
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