Originally Posted by Zorak

From the linked Hyatt page on that Reddit post (also reachable from the Hyatt front page via hamburger menu > Loyalty Program > Earn and then scroll down to Airline Partners)



It does seem weird that there's no way to do this yourself via the website or app, but maybe give this a try on your next check-in? i.e. if they can switch you from earning Hyatt points to airline miles instead, then hopefully they can switch it back as well.