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, 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 download it from the following website.
https://epson.sn > Setup
If the problem continues to occur, check the IP address of the printer listed in the Network Connection Report and contact your router manufacturer.