Here are instructions for connecting the Samsung Digital Menu Boards to your WiFi.
I recommend doint this 1 screen at a time, and turning the power off on the other 2 screens so that the remote doesn't inadverantly make undesired changes.
Next, press the menu button on the remote control and scroll down to the 'network' setting
Next, select 'network settings'
Then, confirm the option for 'wireless' is selected.
Please let us know when the above process is complete so we can confirm the screens are connected to our system for you.