All that information provided to you, oddly these days, is correct.
But do note if you do want to use the voucher, youll have to put the 440 (or 240 rather) towards one ticket, then wait a week or two to get the voucher, then book the second flight and play the game of sending in the voucher to ticket your second flight. You only "pay" the $200 fee once.
Take @
Uzzar's advice - book the tickets now (at a good price), and use the voucher towards a future trip where the balance can be consumed without doing the voucher dance.