Coming (probably too) late to this, all the average person can do in these kind of circumstances is check the real basics.
Is the correct mode selected.
Remove / refit the display, in case of bad connection.
Check the plug is secure to the motor (on the crossfire it's on the chainstay, under a protective cover)
Look for damaged wires.
Visually check (assuming its the same as the earlier crossfires) crank sensor and its wires. That's assuming you can even see it.
Anything beyond that, as per previous replies, back to the supplier, any tinkering may invalidate the warranty.