I and a friend both have the original FX pocket chronograph. We cannot get the unit to pare with our iPhones. I have deleted and reinstalled the app several times (which has worked in the past) and turned the unit off and on but nothing works. I can get to the “device found” but it then continues “searching” but never pares with my phone. I’m beginning to wonder if this model is no longer supported by the current app. Any comments or suggestions?