Blank screen login https

Hi. I just set up duckdns with let’s encrypt support enabled and mobile app now fails to login when using https URL. It prompts a white blank screen and freezes.
I have no problem when I acces HA from web browser. Neither I had problems logging in with mobile app when using HA without SSL.
What is wrong? I Also tried installing NGINX, bug It doesnt work neither

I have the same problem. When I connect from an external network, the application normally works (https://xxx.duckdns.org:8123). But when I try to connect in local network at https: //192.168.x.x: 8123 the application freezes and the screen is blank. On my PC I normally log into HA in local network, only the certificate warning is displayed.