Update:
. I can view my C&P stays in W Taipei, but NOT my Paid stay, on SPG.COM. I get a "The system is temporarily unavailable" message. Paid bookings with non-W hotels are visible
. I still cannot add EITHER C&P or Paid stays Stay Passes to my passbook through the iPhone App, again only for W Taipei. The error message is "Temporarily Unavailable"