06-07-2016 18:30
06-07-2016 18:30
06-08-2016 13:28 - edited 06-08-2016 13:30
06-08-2016 13:28 - edited 06-08-2016 13:30
Welcome to the Community! Sounds pretty weird that your Flex is not being paired with your new iPhone 6s, and I appreciate the time you spent following some steps to set it up your tracker. However, I would like you to take a look of some other instructions that you can find on @AlejandraFitbit post to pair your tracker on an iOS device.
Let me know how it goes!