I'm sorry about the issue. What's the model of your internet modem / router device?
Do you mean you've gone to the Wireless LAN setup / wi-fi setup menu on the printer's screen and connected to your wi-fi / wireless network name successfully, but the computer still could not find the printer?
Do you have windows xp, vista, or 7, or 8, 10, or mac computer?Can we do a remote support session, so I can troubleshoot the issue directly on your computer together with you?Please reply at the box below. Thank you,