It's advertised on both the app and desktop for me but I'm not able to register on either.
Annoying though my first 2+ night stay of the promo isn't until July 8.
Don't care that much as long as my targeted DEQN offer is honored through end of August -- that's the promo I care about to get me back to Titanium (at 50 nights now).
The 1500 is hardly worth the effort