Confirm the following:
Network devices such as a wireless router, hub, and router are turned on.
The TCP/IP Setup for network devices has not been done manually. (If the printer’s TCP/IP Setup is done automatically while the TCP/IP Setup for other network devices is done manually, the printer’s network may differ from the network for other devices.)
If it still does not work after checking the above, try the following.
Turn off the wireless router. Wait for about 10 seconds, and then turn it on.
Configure network settings from a computer on the same network as the printer by downloading and running the software from the following website.
https://support.epson.com (U.S. and Canada)
https://epson.sn > Setup (Other regions)
You can register several passwords on a wireless router that uses the WEP security type. If several passwords are registered, check if the first registered password is entered in the printer.