Then I walked up and down the same block and noticed how many other parking tickets had the
" failure to display " and there were several. SCAM 😡
Plus they deliberately leave off the instruction to display the paper receipt on your dashboard in order to write a citation to make money.
There's no other reason.
Furthermore they already know if you paid or not using their electronic device which is why you include your license plate when you pay at the multimeter space.