I replaced the pixhawk and raspberry pi from my BR2 and after Flashing the SD cards as per instructions on ardusub I cannot access to the ardusub companion computer set up. That error is showing on the wifi status.
Components used from Advanced electronic package from BR.
@Luis this is an interesting problem. If this is happening immediately after you write the ardusub-raspbian.img to the sd card, then it is probably a physical issue with the raspberry pi (defective). I have observed this once in the past with a visible damage to the wifi chip on the board.
Do you have another raspberry pi or ROV? you can move this sd card to another raspberry pi to quickly identify if the problem is the hardware itself.