Hi Jamshidk
I am surprised you are getting that message and you checked the router settings and it is showing that the Mac Filtering is disabled.
I would suggest connecting the printer to the router with a ethernet cable to get a valid IP address and then setup the wireless.
Print a configuration report.
Type the IP address from the configuration page in the address bar into internet explorer browser. This will open the embedded web server for the printer. Click on the Networking tab, on the left hand side select wireless. After this is setup and applied, disconnect the ethernet cable.
Should be on the wireless network. Takes about 1 minute.
Run the add printer wizard.
Go to start, devices and printers and select add a printer. (Win 7)
Test the printer.
If you need more assistance just let me know.