My WiFi is not connecting to 2 difference cell phones. It has been connected successfully for weeks, suddenly not connected and won't reconnect. It won't recognize the WiFi password. The WiFi is fine on a laptop and a tablet. I am not able to log into the router (won't accept my password). Tried resetting the router and restarted the computer - no change. I have a Netgear Nighthawk AC1900, Model R7000. What can I do?