Custom test bench - part 6: DCC-EX + WIFI

I received the WIFI shield from Makerfabs:

I went through the software installation again by running C:\Olivier\Tools\CommandStation-EX-5.0.7-Prod\CommandStation-EX\EX-CommandStation-installer.exe. I tried both with connecting the shield to my home WIFI and configuring the shield as an access point.

In both cases, I was able to connect to it with two Apps on my phone:

On the App, I was able to auto detect the engine and run a few functions. Unfortunately, I wasn't able to connect wirelessly from JMRI. It seemed that the IP address might have changed or something, but the connection was not successful. 

I therefore ordered a display to add to the Arduino to display its IP address...