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 setting to Manual.
Reset the network address if it is incorrect. You can check the IP address, subnet mask, and default gateway from the Network Status section on the network connection report.
If your printer and network devices still do not connect after confirming the above, try the following.
Turn off the wireless router. Wait for about 10 seconds, and then turn it on.
Configure 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.com/support (U.S.)
https://epson.ca/support (Canada)
https://latin.epson.com/support (Latin America)
https://epson.sn > Setup (Other regions)