This was the process used for booking. After logging onto Amex I clicked through where highligted
[ATTACH=full]401582[/ATTACH]
Obviously these are not he dates I selected as it's in the past, but you get the idea...
[ATTACH=full]401583[/ATTACH]
The URL below is https://travel.americanexpress.com.au/apps/shopping...
[ATTACH=full]401584[/ATTACH]
It's very clearly stating the benefits and its part of The Hotel Collection. Clicking through this is still confirmed...
[ATTACH=full]401585[/ATTACH]
Selecting a room, still all good
[ATTACH=full]401586[/ATTACH]
And finally on the payment page, still telling me it's The Hotel Collection
[ATTACH=full]401587[/ATTACH]
That's how I booked it. Something went wrong on the backend obviously and they're not taking responsibility.
Edit: In fact, I can't even see how you could book this not with The Hotel Collection!