No port opened - Debian

I had HA installed on this same machine about a year ago and it was working. I uninstalled it soon after and today I tried installing again using these instructions: Installing Home Assistant Supervised on Debian 10

It’s not listening on any port. Using Fing it doesn’t seem as if any new ports are opened. Here is a list of running processes - does it seem as if it’s running properly?

root       942  0.0  0.0   6728  3308 ?        Ss   15:04   0:00 bash /usr/sbin/hassio-supervisor
root       964  0.0  0.0   6728  2260 ?        S    15:04   0:00 bash /usr/sbin/hassio-supervisor
root       965  0.0  1.5 830868 60544 ?        Sl   15:04   0:00 docker start --attach hassio_supervisor
root      1123  0.0  0.0    200     4 ?        S    15:04   0:00 s6-supervise s6-fdholderd
root      1305  0.0  0.0    200     4 ?        S    15:04   0:00 s6-supervise watchdog
root      1306  0.0  0.0    200     4 ?        S    15:04   0:00 s6-supervise supervisor
root      1310  0.3  2.0  91276 79200 ?        Ssl  15:04   0:11 python3 -m supervisor

It is not running yet. Did you wait 20 minutes after installing ?

Oh yes, I waited about an hour first, since then I have tried restarting the PC a couple of times. What command do you recommend to attempt to start it up properly?

I tried a systemctl status hassio-supervisor.service and got this back:

Jul 18 19:29:26 nuc-inge hassio-supervisor[942]: 21-07-18 19:29:26 WARNING (MainThread) [supervisor.plugins.audio] Error on installing Audio plugin, retrying in 30sec
Jul 18 19:29:56 nuc-inge hassio-supervisor[942]: 21-07-18 19:29:56 INFO (SyncWorker_0) [supervisor.docker.interface] Downloading docker image homeassistant/amd64-hassio-audio with tag 17.
Jul 18 19:30:14 nuc-inge hassio-supervisor[942]: 21-07-18 19:30:14 CRITICAL (SyncWorker_0) [supervisor.docker.interface] Pulled image homeassistant/amd64-hassio-audio:17 failed on content-trust verification!
Jul 18 19:30:14 nuc-inge hassio-supervisor[942]: 21-07-18 19:30:14 WARNING (MainThread) [supervisor.plugins.audio] Error on installing Audio plugin, retrying in 30sec
Jul 18 19:30:44 nuc-inge hassio-supervisor[942]: 21-07-18 19:30:44 INFO (SyncWorker_1) [supervisor.docker.interface] Downloading docker image homeassistant/amd64-hassio-audio with tag 17.
Jul 18 19:31:00 nuc-inge hassio-supervisor[942]: 21-07-18 19:31:00 CRITICAL (SyncWorker_1) [supervisor.docker.interface] Pulled image homeassistant/amd64-hassio-audio:17 failed on content-trust verification!
Jul 18 19:31:00 nuc-inge hassio-supervisor[942]: 21-07-18 19:31:00 WARNING (MainThread) [supervisor.plugins.audio] Error on installing Audio plugin, retrying in 30sec
Jul 18 19:31:30 nuc-inge hassio-supervisor[942]: 21-07-18 19:31:30 INFO (SyncWorker_0) [supervisor.docker.interface] Downloading docker image homeassistant/amd64-hassio-audio with tag 17.
Jul 18 19:31:47 nuc-inge hassio-supervisor[942]: 21-07-18 19:31:47 CRITICAL (SyncWorker_0) [supervisor.docker.interface] Pulled image homeassistant/amd64-hassio-audio:17 failed on content-trust verification!
Jul 18 19:31:47 nuc-inge hassio-supervisor[942]: 21-07-18 19:31:47 WARNING (MainThread) [supervisor.plugins.audio] Error on installing Audio plugin, retrying in 30sec