I am experiencing an issue which I connect to the new companion app I updated yesterday:
I have three HA servers running in three different locations, currently I am in location 3 and select my current SSID when I started the new app. So far so good, HA 3 is working ok.
But when I switched to HA 1 the app again asked for a SSID so I selected SSID in location 3 and saved.
Now I cannot access HA 1 being connected to SSID in location 3? When I turn off the WiFi on my iPhone I can connect to HA 1 ok.
From what I can tell you now told the companion app that HA1 can be accessed locally when you are connected to SSID 3, which isn’t true. Check the companion app settings to select the SSDD where each HA instance can be accessed locally.