Can´t save DuckDNS configuration

Hi all!
I´m new to HomeAssistant and I finally managed to setup up some integrations and automations.
Recently I´ve installed DuckDNS from the Add-On-Shop but unfortunatelly I can´t get it to work. When I fill in the configuration data (terms, token, domain) and hit the save button, the configration everytime reverts to factory settings. I´ve deinstalled the Add-On, re-installed it, rebootet the host… all without luck.

I´m on Home Assistant OS 5.12 with core-2021.3.4 on RasberryPi4.
Does anybody has a glue how to solve this issue?

Cheers, Rik

Hi,
Have you turned on Advanced Mode - available in your profile settings?

Yes I have.

Usually this means you haven’t entered valid options.

I’m pretty sure that the values are correct. I don’t get any yaml errors and it happens also when I just set accept_terms to true. I guess it’s a problem with access rights to the location where the config file is stored. Could you please check where the duckdns config file is located at your installation. I can’t find it, even with ssh or samba access.

I don’t have it, I am just saying that the inability to save addon config is usually to do with the entries you are trying to save being wrong.

Show us your settings (anonymising private stuff of course)

I would like to set the following config:
lets_encrypt:
accept_terms: true
certfile: fullchain.pem
keyfile: privkey.pem
token: myduckdnstoken
domains:

That is not even yaml

The forum editor messed up the indention. It is the yaml the duckdns config provides in reality.

You need to quote your code properly.

Ok, here we go:

lets_encrypt:
  accept_terms: true
  certfile: fullchain.pem
  keyfile: privkey.pem
token: mytoken
domains: 
  - mydomain.duckdns.org
aliases: []
seconds: 300

You were right, it was a configuration error!
I mistakenly put the domain directly after domain:, instead of putting it in the line below.

Sorry and thank you for your help!

Glad you sorted it. Also no need to apologise.