I just got new iPhone 7 plus so that's when the issue started. I have an album in my Photos on my iPhone called "Watch" It is synced to my watch too. But when I press on the watch and select Customize, there is no option to change the photo. However, the watch face called Photo Album has all the synced photos showing there! What do I need to do to have all my photos from the synced album available for my watch face?? Thanks.