Cannot Connect to HASSIO after Update

Installation Home Assistant OS
1

HI. I’ve been using Hass.io on a raspberry pi for around 6 weeks. I’ve been following BRuH and Dr ZZZ YouTube clips and looking up this forum and other sources and have been getting along really well. No issues at at. Until last night when I pressed the Update button.
Since then I have been unable to access Hass.io via a browser. My samba connection ans SSH connections both work but the web server part is not working and I’m at a loss as to what to check.
I’ve googled this problem and cannot find any similar references. Plan C will be to rebuild the SD card in my pi and copy over my yaml files. But Plan A would be to see if I can kick start the web server.
So here are some questions.

  1. When using HAss.io if i ssh onto the Pi I have to login as root. no other user id works. Is this correct.
  2. assuming 2 is correct what are the commands to see
    what version of hass.io is installed,
    is it running,
    how to stop it
    how to start it and
    how to upgrade it

It seems to me that some of advice in the forums that discuss this may be referring to hassbian or Docker installations and so don’t seem to work for me.

I’ve tried power cycling the pi but that didn’t make any difference
My pi has a static ip address assigned to it via my router (which seems to work - samba and ssh)
I’v tried http:// address ann https://address and with and without port id.

PS.Ever the optimist I don’t yet have a PLAN B

2

HI, just o let folk know that I fixed it!
Fortunately I had a recent copy of all my configuration yamls on my PC.
I renamed the config.yml file and power cycled the Pi. this forded a new config file to be created and voila! the web interface was back. My SAMBA stopped working for some reason although SSH seemed ok, so i uninstalled SAMBA and re-installed it. Then I copied back my Groups, Customize and Scripts ymls and we seem to be back up and running,
I tried restoring a snapshot but this didn’t seem to do anything, so I think I’ll be copying my config directory onto my PC more often, and certainly before I push the upgrade button again.