Did you use the Desktop program or the Online version? If you have the pdf with all the worksheets there should be an Electronic Filing page. Probably one for federal and one for state. If you efiled you might be able to ask support if they can look it up and see it it was accepted or rejected.. I know they can but don't know how far back they can check. Don't suppose you have your emails from back in 2014? There should be one when you submit it and a second one saying if it was accepted or rejected.
