Edge 530 satellite issue

Just brought the edge 530 plus (18th May). Set it up and went for a ride and it did not pick up a satellite. I think in my ride it picked up a satellite for about 10 seconds then lost. Re-tested with just GPS and GPS + GLONASS. But still the same issue. Software seems up to date 5.50, just not sure what could be the problem? Also I struggling to pair it with me iphone