So I finally had some time to take it out of the box ... I've done the filament measurement calibration, auto home and level bed. All these seemed to work perfectly. But now when I heat the nozzle to 210, the bed to 50 and then select the benchy gcode from the pro folder on the card, absolutely nothing happens. It's just sat there right now, fans spinning. The nozzle temp seems to be fluctuating between about 208 and 212, and the bed is sticking to 49 or 50. Any ideas where to start?