Smartthings wifi hub hidden firewall? Internet fine but can't reach local IP servers

[jkp]

SmartThings WiFi Issue seeing any local devices on the network

Hi, today all devices connected through my SmartThings WiFi hubs can not see other devices on the network. My main router had a firmware update last night and thought the issue was there. I have connected just to my main router and everything is visable. When I connect directly through the SmartThings Wifi again (removing the main router) the same issue is there. This happened one other time and it was related to u/plume AI Security issue. I ended up resetting everything to factory setting and reset up and it has worked without an issue until today. Anyone have any ideas?