Check the following.
Devices are turned on.
You can access the Internet and other computers or network devices on the same network from the devices you want to connect to the printer.
If still does not connect your printer and network devices after confirming the above, turn off the router. Wait for about 10 seconds, and then turn it on. Then reset your network settings by downloading and running the installer from the following website.
http://epson.sn > Setup