Touch ID on Starbucks App doesn't work.
Hello: Let me start out by saying that Starbucks directed me to Apple Support. The Touch ID on their app. doesn't work. I deleted and reinstalled their app; turned off, in settings on my iPhone SE, the Touch ID & Passcode, iTunes & App Store and signed out of and into iTunes Store. Nothing so far, that way I'm asking the Apple Support Community for their assistance.
Mac Pro, iOS 8.1.3