Two issues wrapped in one. First, yes, we should have more graceful recovery from bluetooth disconnection issues. Second, we assumed that unlike the majority of BT devices, trackers would be shared at race meets. So “auto pairing” to a known device could cause a lot of unforeseen issues. We thought it would be better make people pair each time instead of start designing for all these strange scenarios where you need to forget devices or try to notify someone to get off of your device if the took it first, etc.