Join Date: Nov 2013
Location: NYC / TYO / RSW Up in the Air avoiding the Snowflakes
Programs: UA GS 1.8MM, AA 2.1MM, EK, BA, SQ, CX, Marriott LT, Accor P
Posts: 8,137
Did you receive any emails from the flight cancellation from UA? Can you check your account and see if the FFC is showing up when you are logged in?
IIRC The navigation is My United > Wallet > Travel Credit.