Home Assistant on RPi4 - ERR_CONNECTION_REFUSED

Hi,

This is my first post here but I guess not the last. After rebooting my WiFi (and RPi 4) I can’t access Home Assistant anymore. When connecting a screen to the RPi it seems to work fine as well as the Home Assistant-instance. However, when I try to access homeassistant.local:8123, iOS App or via DuckDNS I can’t reach it and get “ERR_CONNECTION_REFUSED”.

Does anyone know what I could do to access it again?

RPi Interface:

Thank you in advance.

Best regards,
D