DuckDNS add-on stopped updating IP addresses

[tdragon]

Describe the issue you are experiencing

At some point the DuckDNS add-on stopped updating both IPv4 and IPv6 address. I cannot say when it happened, I didn't access my host from outside for a while.

There are warning in the add-on log, see below.

But if I run curl -s "https://www.duckdns.org/update?domains={my domain}&token={my token}&ipv6={my ipv6}&verbose=true" manually in the SSH add-on, I get:

OK

{my ipv6}
UPDATED

And I can see the address is updated on duckdns.org. The same happens for the Ipv4 - no automatic updates, but manual update works fine.

Am I doing something wrong?

What type of installation are you running?

Home Assistant OS

Which operating system are you running on?

Home Assistant Operating System

Which add-on are you reporting an issue with?

Duck DNS

What is the version of the add-on?

1.15.0

Steps to reproduce the issue

My configuration:

domains:
  - "*.{my domain}.duckdns.org > {my domain}.duckdns.org"
token: {my token
aliases: []
lets_encrypt:
  accept_terms: true
  algo: secp384r1
  certfile: fullchain.pem
  keyfile: privkey.pem
seconds: 300
ipv6: default

Anything in the Supervisor logs that might be useful for us?

No response

Anything in the add-on logs that might be useful for us?

s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
# INFO: Using main config file /data/workdir/config
+ Account already registered!
[12:49:53] WARNING: 
[12:49:53] WARNING: 
[12:49:54] INFO: Renew certificate for domains: .....

The WARNING line is repeated continuously.

### Additional information

_No response_