Hi,
So let me start by explaing my setup. HA OS running on raspberry pi 4 and updated to latest 2022.3.1. Connected via wifi to the router and the router connected to the att modem via IP passthrough.
Have a single url for external and internal use, configured through duckdns. Also have dnsmasq running as addon for loopback nat.
Now the for the issue -
I can access the external url https://xxxxxxx.duckdns.org from my laptop on home wifi, vpn or any mobile hotspot with no issue so I think the configurations are correct.
Installled mobile app on my android and i am able to access HA from my mobile on mobile data (4g) but as soon as I switch to my home wifi it stops working.
So i am not able to find were exactly the issue is. It was working for a while but it stopped a week back and since than I have tried all the possible otpions and nothing as worked. Your help on this will be highly appreciated.
Update: I used an old phone and it worked with no issues on that. Then I tried on Samsung Galaxy S22 and Also on Fire tablet and the app does not work on that.