Quoted from KingBW:
+1 - My friend with one arm uses his knee on the flipper button and does pretty decent (surprisingly). Wish I could get the app to work. It only worked 1 time for me, so I know its possible. The app just freezes when it starts up. There's no opportunity to press the left flipper button to search for the match.
you don't push anything to search for a match. the came will connect if its on and the phone app is on. you hold the buttons after its connected in order to link a phone to the current player after the game is started, but before they shoot it into play. It unfortunately often does have a problem making that first connection.