Pull the printer tray fully out, then slide it back in.
Do not pull the paper. The ribbon re-seats itself when the tray closes, and pulling the paper is what turns a thirty-second fix into a real jam.
If it still will not feed after two tries, call (914) 825-5498. We can see your kit's status from here and we have seen this one before.
Didn't solve it? Text (914) 825-5498. If it's your event night, lead with that — those go to the front of the queue.