There are several reasons your watch may not be picking up signal. First, if the icon continues to blink that's because it is trying to find signal. Try moving to a clearer area so that the GPS signal can connect. If this doesn't work, then make sure that the watch is securely strapped to your wrist with the screen on top of your wrist. If the band is loose and the watch is loose on your wrist, then this could interfere with the signal and cause signal loss/interruption.