Check the following.
Other devices on the network are turned on.
Network addresses (IP address, subnet mask, and default gateway) are correct if you have set the printer’s Obtain IP Address to Manual.
Reset the network address if they are incorrect. You can check the IP address, subnet mask, and default gateway from the Network Status part on the network connection report.
If still does not connect your printer and network devices after confirming the above, try the following.
Turn off the wireless router. Wait for about 10 seconds, and then turn it on.
Make network settings on the computer that is on the same network as the printer using the installer. You can run it from the following website.
https://epson.sn > Setup