I don’t know what is going on but after several reinstalls and reconfigures of the app I can finally connect locally with these settings. However if I turn WiFi off on my phone it won’t connect externally, the wheel spins and then the app crashes.
Neither can I connect from my phone in a browser using the Nabu Casa URL.
I don’t really want to either but I still haven’t worked up the courage open a port in my router. It goes against the grain for me to choose to rely on a cloud service even if it is one I trust as much as HA.
My problem is that I understand enough to set up external access but not enough to know if I’ve done it safely. (But the latest post on this thread is interesting DuckDNS - It’s not just me - it’s you!)
EDIT: I spoke too soon. After closing the app I can’t now open it on the local network either.
I think there is an issue with the app…