A normal functioning system for going on one year has been glitchy in the past couple weeks, with no changes in the system. Comcast Internet, three Eeros located around the house. Client reports connecting, getting dropped, then trying to log in again, it requires a password, and won't accept the house password.

This seems to happen on guests devices, but not the clients devices. I'm not asking you to troubleshoot the whole system, but what would cause a particular unit to get bumped and not accept a password that has previously been used to login successfully?