Something that had been bothering me a little over the past week or so, which I only now just had the time to investigate – is Home Assistant sitting with a spinning connecting logo.
Turns out that the browser elements of the application, and the reason I was getting this is because the script which manages the DNS update of my public IP had stopped!
So if this happens to you – check that you are using the right IP to access your Home Assistant instance!
Luckily things were still working fine in the background.