I’ve requested to contest several parking tickets (all paid by ParkMobile). You don’t need a hearing. There’s an email option and you fill it out all online and then they put the ticket on hold while reviewing it. I’ve done this several times but have yet to actually hear one way or the other about any of the tickets. It’s always when I’ve paid via ParkMobile. As far as I can tell, they either don’t check or they give tickets and hope that you won’t contest them.