Palermo ZTL confusion

We drove to Palermo today, driving up from Monreale. We parked at the Orlando APCOA.

All the reviews said that this was not in the zone, including one from last week. However, whilst I didn't see any signs, we kept getting flagged by Google maps for "tolls". I kept track and don't recall seeing any ZTL signs. However, I loaded the app this evening out of anxiety and the map on there shows the Orlando car park inside the ZTL - has this changed recently?

Am I able to pay now on the app, or is it too late? I downloaded it and tried to load but am very confused if and how the pass is validated.

Thank you