Duck DNS stopped working

Configuration
1

Hi, I’m looking for help and I hope that someone can help me.
From two day I can’t connect to my homeassistant throught the internet with duck DNS and NGINX. I didn’t modified anything of the configuration of both component, and also the configuration of the router has been the same since I set it up two/three month ago. The log of duck DNS is free from any error message; same for NGINX. When I try to connect to homeassistant through the app for android it gives me the error: 400 bad request.

duck DNS register:

[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] done.
[services.d] starting services
[services.d] done.
# INFO: Using main config file /data/workdir/config
+ Account already registered!
[15:18:01] INFO: OK
93.144.110.113
NOCHANGE
[15:18:02] INFO: Renew certificate for domains: domoticadc.duckdns.org and aliases: 
# INFO: Using main config file /data/workdir/config
Processing domoticadc.duckdns.org
 + Checking domain name(s) of existing cert... unchanged.
 + Checking expire date of existing cert...
 + Valid till Feb  6 04:37:44 2022 GMT (Longer than 30 days). Skipping renew!
[15:23:14] INFO: OK
93.144.110.113
NOCHANGE
[15:28:15] INFO: OK
93.144.110.113
NOCHANGE
[15:33:16] INFO: OK
93.144.110.113
NOCHANGE
[15:38:17] INFO: OK
93.144.110.113
NOCHANGE
[15:43:18] INFO: OK
93.144.110.113
NOCHANGE
[15:48:19] INFO: OK
93.144.110.113
NOCHANGE
[15:53:21] INFO: OK
93.144.110.113
NOCHANGE
[15:58:24] INFO: OK
93.144.110.113
NOCHANGE
[16:03:25] INFO: OK
93.144.110.113
NOCHANGE
[16:08:26] INFO: OK
93.144.110.113
NOCHANGE
[16:13:27] INFO: OK
93.144.110.113
NOCHANGE

NGINX register:

[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] done.
[services.d] starting services
[services.d] done.
[15:49:47] INFO: Running nginx...

Thanks for any advice/ help that you can give me.

2

Did you check the HA logs ?

3

Maybe this error is connected:

Logger: homeassistant.components.http.forwarded
Source: components/http/forwarded.py:121
Integration: HTTP (documentation, issues)
First occurred: 18:44:21 (33 occurrences)
Last logged: 18:48:46

Received X-Forwarded-For header from an untrusted proxy 172.30.33.2

4

Now it works!!! I check if the configuration of the plugins were correct and after a reboot everthing works like before.
Thanks for the help