My guess is your website is "glitching like crazy" because there is no availability. It doesn't actually tell you there is no availability now, it just gives you an error message that says something went wrong.
Do you have EK status? If not you won't find any availability.
LAX and SFO both will be hard to find availability in F no matter what, especially when you have fairly set dates. Try SEA.
Nah I don't have status, but a boat lot of amex points lol