Honestly, and I may get some fire for alluding to this. Diamonds were the only one targeted in this promotion, and it was emailed specifically to Diamonds which has a profile that Hyatt was targeting.

The logic is, a lot of Diamonds are ticked off about the Challenge able to be redone over and over. Perhaps, Hyatt did mean to target Diamonds. Has anyone try to apply after the fact, the error announcement is made. The link still looks active last I looked. Of course, you'll have to apply through the email you received for the offer to be honored. Diamonds maintaining Diamond makes sense. Its rewarding your loyalty.

I'm in Canada, so I don't get this opportunity.