Dash/Minute graph access timeout

Hi,
Some times ago, I found in Flukso forum a way to open access to the Flukso box's web interface via Wifi.
I followed the procedure and now I am not obliged to connect physically an UTP cable on the box to modify some parameters in the web interface.

But now I cannot see the Dash/Minute graph any more.

The strange behavior is that I can still see the Dash/Minute graph on my iPad. On my Linux computer, whether I use Chrome or Firefox, I still get the message about a timeout occuring, or about the fact that I am not in the same LAN as the Flukso box.
My computer is connected on the same WIFI SSID as my iPad.

This behavior started exactly on the moment I have modified the firewall of the Flukso box.

Any help would be appreciated.

Thank!
LOUIS