I read in your description on the types of devices the app is accessible on. And based on only connected with the apple iwatch series 2-3, from being an apple customer, the 4 series is the best when it comes to gps systems on a watch. So when is the 4series going to become available for compatibility with sweatcoin?
The AW series 4 is already supported by the Sweatcoin application. I currently switch between AW series 3 and 4 devices due to the constraints of the battery life.
If you start the application on the watch and when it is active start the phone application. This should synchronise the two devices. I hope this is a suitable description. If not, please let me know and I’ll take another stab at it