Should I pay a traffic ticket that I got vacationing in Italy?

In June 2025, we drove around Italy for a few weeks. Yesterday (one year later), I got a registered letter from the Ischia police department saying I drove in a restricted area of town with a fine of 74 Euro if I pay ASAP. I am American. Should I pay this ticket or not? If I don't, could I be refused entry into Italy when (god willing) I visit next time?