Help! I am traveling tomorrow from Boston via Dulles to Rome, April 12 on United. My understanding is that you need a vaccination card plus booster verification (plus EUDPLF which I have, plus passport, which I have) to enter the Italy. On the return trip, I will need a negative COVID test to re-enter the United States. United Airlines has a "travel ready center" where I scanned and uploaded my passport, COVID vaccine plus booster card, and the EDUPLF form. I have three green check marks saying I am completed requirements. But when I go to check in, I can't get a boarding pass. It says I have to get one at the airport. I tried calling United (not an easy matter) and after much time, the agent said it might be a system "issue" and I could try later but that I might have to check in at the airport. But another message on the United site says I need a negative Covid test (another place says I need a negative Covid test OR a vaccination card--but this one place says I need a negative Covid test).
Could someone help me? Have I misunderstood the process? Do I need a negative Covid test AND a vaccination/booster card for departing the U.S. and entering Italy?
Thank you. I am totally stressed.