After booking 2 tickets in the AM JFK - SFO for Memorial online before site crashed, called last night around 8 - spent an hour on the phone waiting for supervisor, had the flights/confirmed the cost I saw handy and the supervisor got on the phone and was super nice about it and let me book another 2 tickets for JFK-LAX for Labor Day.
Family member called even later - around 10 and was able to book 4 more tickets for memorial and even sent me a screenshot that they gave him a 25$ credit on top of that! cant wait to hear how that happened to him!
Thanks so much OP!!!