I'm having the same exact issue as 'sect119.' Red Light syncs up with app, turns green for a moment then goes back to flashing red/orange. The "Test Your Light" button on the app does not trigger the Red Light, and the Red Light does not seem to be synced, despite saying it's connected upon original connection. It's running on a 2.4ghtz and on a channel below 12 (I tried them all).
It worked briefly for two goals in a game, and then reverted back to this problem.
Any suggestions? Thanks in advance!