My camera is used with a mobile van for a command post (work center). When mobile, I have one WIFI connection. When in garrison / garage, I have a different WIFI connection.

@BrijeshSakariya Thanks for the solution. Thanks to @Clive_A too. I had the same problem today while setting up WAN/LAN1 as a backup with a cellular modem. I am using: ER605 v2.0, Firmware 2.0.0...