Thanks you very muchINA 221(g) checked on the paper you were given means your case is officially in AP (Administrative Processing) because the CO has found you ineligible for an immigrant visa due to some concerns about your previous stay in the US and Canada. The CO however is willing to give you a chance to clear up the concerns, hence they did not outrightly deny your application but officially gave you a temporary refusal pending your submission of the requested information and some further review of your case after the submission. So provide them with the requested information without delay.
You can read about 221(g) Administrative Processing here
I have showed to her all Canadian legal staying paper
Also i explained why stayed USA long because was searching appropriate flight school then i went Canada and decide to flight lessons there.