Sussed out what happened, I forgot to set it to allow viewing of 'messages'. 'Messages are the 'locations' the balloon positions on Google maps.
Yes Mick for 'Tracking' after pressing the on button and it flashes, you press the OK button and that light comes on. You continue to press it until that light goes out (approx 5 seconds) it will then start searching fir satellites. Sometimes it gets them almost right away other times it can take up to 30 minutes. When it loses the signal, in heavy forest, tunnels in building etc, the on light flashes intermittently, but will begin searching again, once out in the open, until it relocates the satellites.
In the Trial, I left it outside on the decking.
Dave.