It was performed, but all but the very last performance were A) lacking in all aspects and B) bad timing. Her Jimmy Fallon performance was the only "good" performance of the song, the others weren't that great. And it was timed we but it was too late
Because there are better songs that should've been 2nd single, such as Supernatural, or Thinking Of You. C'Mon is cute but it's good for a later single, 4th or 5th.