At least until you get everything working well, ensure the mode switches on the front are DOWN (towards the circuit board), UP, UP, DOWN.
Then check S2 dip switches on the main board. Ensure all the tops of the switches are switched away from the front of the unit, in the same direction to the back. You will find S2 almost straight in line with the RJ45 network connector about half way up the circuit board. I expect it is one of these switches that is out of place.