Cannot access Dashboard

Hi all,
I tried to access my HA dashboard using my somewhat recently configured secure weblink to be taken to a black page stating ‘This page cannot be reached’.

It was working perfectly fine when I configured the secure url using the Godaddy DNS add-on.

I should mention that I have limited access and use HA via the iOS app. Trying to view Server Controls, Logs or Info under the Configuration tab leads to a blank page that states ‘Error while loading page server_control.’

When I discovered that I couldn’t access the dashboard on my PC, I installed the latest update via the iOS app in the hope that this would resolve the issue. It seems it’s created more issues in reducing what I can access in the iOS app.

Has anyone experienced this? I’ve no idea how this has happened and how I can fix it.

Your help is greatly appreciated.