When I first paired my Instinct Solar with Connect it worked perfectly. A year later, I reset my Instinct for a stupid reason. It would not pair if you selected "Pair" after "Language". Selecting "Pair" after "Language" selection stated in the manual and twice with tech support.
Spent 5 plus hours frustrated by emptying the cache, installing and uninstalling Connect, turning my phone off and on, removing the Instinct from Bluetooth. Endless combinations. Then I tried pairing through the watch.
After reset, start watch, pick "Language", "English" when asked to "Pair with Phone" change to "NO" for Pairing. "NO" is the key. Then go to watch Menu/Settings/Phone/Pair .....open Connect. Recognized Instinct (after signing in) first try! Problem solved. I wish I could have those 5 hours back