My own IP address is blocked every time

Configuration
1

At Notifications I receive the message

Login attempt failed

Login attempt or request with invalid authentication from 109.x.y.47 (109.x.y.47). See the log for details.

I have installed Duck DNS add-on. The log is fine and the IP address is registered correctly and dynamically.

I have configured in my configuration.yaml:

http:
  ssl_certificate: /ssl/fullchain.pem
  ssl_key: /ssl/privkey.pem
  ip_ban_enabled: true
  login_attempts_threshold: 5

homeassistant:
  name: Lavender name Hill
  latitude: 42.x
  longitude: 18.y
  elevation: 250
  country: ME
  unit_system: metric
  currency: EUR
  external_url: "https://domain.duckdns.org:8123"
  internal_url: "https://domain.duckdns.org:8123"
  time_zone: "Europe/Amsterdam"

Now and then I had issues, but now it’s completely giving a problem as in the file ip_bans.yaml every hour my own IP address 109.x.y.47 is registered. The iPad at the wall (it’s a rental) I cannot get it working from a distance. I have full access to it, so I hope I can fix this issue from my own home.

By the way, I have installed 5 sites, all based on the same recipe. This house is the only one having this issue. The others not and they are identical.

2

I have now removed the following from the configuration.yaml

homeassistant:
  name: Lavender name Hill
  latitude: 42.x
  longitude: 18.y
  elevation: 250
  country: ME
  unit_system: metric
  currency: EUR
  external_url: "https://domain.duckdns.org:8123"
  internal_url: "https://domain.duckdns.org:8123"
  time_zone: "Europe/Amsterdam"

I have made those settings via the user interface. But this has not resulted in a change. Still my own external IP address is being banned.

This is only happening on my iPad in this house. Accessing from abroad via Safari is no issue.