ESP32-POE-ISO-EA Installation fails


I just bought my first ESP32-POE-ISO-EA board and try to install it. It is shown in Home Assistant but when I click on update, it shows an error massage. ESP Home Addon is installed.

Also, I bought the LAN Version not tu use my Wifi. During the installation process I had to type in my wifi credentials to go forward. So at the moment it uses my wifi and not the lan connection. How can I change this?

Thanks for your help!