USA to Romania flight help
 

A shot in the dark here, but has anyone recently flown LOT Polish Airlines from the USA to Romania??
Anyone who has flown Polish Airlines from anywhere in the USA to anywhere in Europe will also be able to advise me on their restrictions.
IE: l have a US covid proof of vaccination card.
l will wear a mask.
BUT, do l need a 72hr covid test showing negative also??
Thanks for any constructive help.
(Polish Airlines must be on vacation, they aren't answering messages or the phone!)