You may have turned on password protection without first setting a password. Try entering 0000 using the remote control.
If you have entered an incorrect password too many times and see a message displaying a request code, write down the code and contact Epson.
If you lose the remote control you cannot enter a password. You can order a replacement remote control from the Epson Store or at an Epson Service Center. See the Epson Service Center locator on the Contact Support page for your projector.