If your printer is not recognizing your email address for cloud printing, here are some steps you can take to troubleshoot:

1. Check the printer's supports list of compatible operating systems and/or applications.
2. Ensure the printer is connected to a Wi-Fi network and logged in with the correct username and password.
3. Check to see if the printer’s firmware is the latest version.
4. Log out and log back into the printer’s account.
5. Make sure you are using the correct email address with the printer.
6. Uninstall and reinstall your printer.
7. Contact the printer manufacturer’s support for further assistance.