I have been recently been wearing my new Stainless Steel Space Black 44mm Apple Watch, after upgrading from my old Series 0. Using my new watch daily, and comparing it to my previous Series 0 watch, I am encountering the following issues: 1. Apple Pay: This is failing around 50% of the time whenever I use it on London transport (buses and underground trains). I double tap the side button on the watch as I approach the card reader, and I see my Santander debit card showing on the screen of the watch so I know the watch is ready. However, as I said, at least 50% of the time, when I touch or hover near the card reader, either the watch or the barrier will give an error (the card reader at the barrier shows a green light when successful but a red light when unsuccessful) and I have to double tap the side button on the watch again, to try it again, and it finally works. The watch always says something like, “Hold the watch near the reader”, which I was doing anyway, OR, it just says, “Double tap the side button and try again”. Its quite frustrating really because my old Series 0 watch would never fail with this – it worked 100% of the time. I am not doing anything differently…..??? 2. Activity Rings: On my old watch, my Move Activity Ring (the red one!), was always set to about 270/280 and more often than not, I would fill this ring almost every day (the Activity ring would show I had filled it to about 280-290). Now, on my new watch, again I have the Activity Ring set to 270/280 and I am doing exactly the same daily activates (commuting to and from work and walking about inside an office), but it is reporting that I am now smashing the Move Activity Ring and showing a score of about 320??! Is the new watch much more sensitive to movement or something?!? 3. Waking the Screen: On my old watch, upon turning my wrist to view the time (no tapping the screen)m the screen would illuminate for a good 10 seconds giving me ample time to read it. My new watch (I have timed this several times), upon turning my wrist, the screen is ONLY illuminating for 5 seconds which is not enough time to read all the complications on the screen so I have to return my wrist again to illuminate it again to finish reading the screen??! Why is the screen time illuminating so short on the new watches???