DuckDNS addon constantly stops without reason

I am curious if anybody else has encountered this problem (referenced as this Github issue)? If I go into hass.io in the left panel and start the DuckDNS addon, go to overview and then back to the addon page I can see that is has stopped again.

Most of the time it is not a problem, but ever so often (daily or semi-daily) my clients lose access to the hass.io server on my Raspberry Pi 3. When that happens, I have to ssh into hass.io and restart the server. I am not entirely sure that it is related to the issue in question, but it sure seems plausible.

For a start I would install this custom sensor:

Do you monitor other system stats like memory, cpu use etc…?

This is not normal:

…(daily or semi-daily) my clients lose access to the hass.io server on my Raspberry Pi 3. When that happens, I have to ssh into hass.io and restart the server.

I monitor memory use and disk use, but not cpu, but they are not showing anything unusual. Disk use is at about 12% and memory at ~30%. I am using an official 2.5Amp RPi charger, so unless there is something faulty with the hardware, current shouldn’t be a problem.

The DuckDNS log show nothing, but I will also look at homeassistant.log the next time client access stops.

My DuckDNS certificate has expired 3 days ago at not been renewed automatically by this addon.
Found this in the DuckDNS log today:

# INFO: Using main config file /data/workdir/config
ERROR: Lock file '/data/workdir/lock' present, aborting.

What does that mean?

I uninstalled and reinstalled the addon, and after that it worked!