I was successfully granted a challenge from the recent HHonors Gold. My HHonors acct was never used.
I noticed the match came from caemail@hyatt, although I had the schmooze with gold passport@hyatt (they asked to confirm address, when I did they asked for activity, I sent a pic of my card again and that was it)
What I don't understand is why my upcoming reservation was changed, but only says 'Gold Membership'. (I emailed the hotel stating I'm a Diamond, then got an auto email saying my reservation was changed. The only difference was that it now stated my GP acct #). Online my acct does say Diamond.