I am a UA 1K flier who flies almost exclusively ORD-->BKK and since UA dropped BKK I have been looking for options. It now appears to me that both EK and QR are both in play. Today I attempted to sign up for QR Privilege membership multiple times but registration failed at each attempt...
As you live in the USA (by your profile) it may be better to sign up for AA. QR & AA are OneWorld airlines
http://www.flyertalk.com/forum/onewo...help-here.html
EK are a partner of AS
http://www.alaskaair.com/content/mil...ePlan-partners
As for signing up to QR try a different browser:- Explorer Chrome FireFox