First, I am very familiar with networking, and I had never had any problems with my FiOS internet or router, since the initial setup. I have many devices setup, cameras, thermostats, Amazon smart devices, etc., and everything worked perfectly. 2 days ago I setup several new TP-Link smart plugs, I already had 2 on my network.
After the initial setup, everything worked fine as planned, however after several hours I noticed that many of my Wifi devices stopped working - not all devices, but something happened that knocked all of my cameras and plugs offline, and some of my Amazon devices, but not all, yet some Wifi devices work fine?
Also, now when I try to login to my router, I get an error message - Certificate Error, and I'm redirected to login to my router using an untrusted certificate. While I am able to access my router, and I that the router interface has changed, I still see all of my devices, but I no longer have the ability to modify how I have my devices setup using the MAC address to access my network.
Very strange, I've never seen this before - I was thinking should I completely reset my router and setup all devices again, or is this a problem that someone has seen and might have a solution for. The biggest issue is now my router has a new interface, with some of the advance security settings missing, and I have no idea how that happened?
Any help would be greatly appreciated. Thank-you.