Out of the blue, two days ago, my two MyQ 828LM Internet Gateways stopped connecting to the Liftmaster servers. They have an IP address assigned, just cant get to the server. I don't know what changed. Maybe Liftmaster did a software update, maybe TP-Link did a software update on the M5 - dunno. I have tried factory reset on the 828LM, no change. I did temporarily hook up an old Netgear WiFi router instead of the Deco M5, and the 828LM's connected successfully. Next going to try to factory reset the Deco-M5's and see if that helps. I will also break out Wireshark and see what's actually happening. I wish Deco-M5 had more visibility and/or configurability to see what is being blocked. I temporarily turned off all of the network protection but that did not help either. I really depend on remote operation of our gate opener and garage door opener so if I cannot get it to work I will have to drop Deco and go with another mesh router. Any trouble-shooting suggestions would be greatly appreciated.