Cannot open HA with IOS 13?

Hey Guys,

What i miss here? i use domain with DUCKDNS+ Lets, all work fine on my android, enmter to my HA from anywhere with 4G.
But on Iphone i got “Page cannot be display” any idea ?

Are you using the iOS app or a browser?
If iOS App, check your connection settings. If need be, uninstall, reinstall and go through the onboarding again