Thank you for using the Xerox forum.
Has this ever worked? This does not seem to be a printer or cwis issue.
It sounds like whoever set up the extenders did not do it correctly.
It sounds like they created a second and third LAN.
I would suggest that you review the following.
A way to verify this, is to connect a laptop and the printer to the same wireless router (EX: Church EXT2) and verify that they can connect. If they can connect then you can have the customer resolve their network issues.
The following solution will help configure the printer:
Solution : Configure the Printer to Wirelessly Connect to a Wireless Ethernet Network