MX922 Won't Connect to WiFi

Printer was working fine until suddenly it can't connect to WiFi.  Jumped through all the hoops ( Manual setup, standard Setup, holding button on WPA) but still no luck connecting to access point. It sees my network, but I enter password and it times out. We've had the same password for years, and I've confirmed that isn't the problem. Why isn't it connecting? This printer is less than one month old