One test to try as a quick test, disable WPA security temporarily on the router and connect the printer to the router to see if it keeps connected or not. Re-enabled WPA2 and AES after testing or try mixed mix mode WPA and WPA2 and test.
One test to try as a quick test, disable WPA security temporarily on the router and connect the printer to the router to see if it keeps connected or not. Re-enabled WPA2 and AES after testing or try mixed mix mode WPA and WPA2 and test.