i just checked this website for a shuttle from the FCO airport to rome. i was quoted a price and proceeded to fill in my information. when it came to picking a date, it only went through 2020. i guess that's why it was a good rate... it's a year old.
senoritajva, are you sure? I just pulled up the site (http://airportshuttle.it) and went to the tab for Fiumicino to the city center. Clicked "book now". The "Select Day-month-year" dropdown dates start at 29-12-2021 and run all the way through the year to 26-12-2022 Monday, or does for me, anyway. Try again?