Access Error: 404 when using [Launch Web UI] button

[GraspGG]

Hi (:

For the first steps with MaxLights i did manually add 2 x WLED devices (1 x ESP8266, 1 x ESP32) and double checked their UDP-Port values. The Hardware Support is disabled due to issue #1. OS is Windows 11 23H2.

Beside of adding the hardware i seem to not push the correct buttons to get the software working... Web-UI Port is set to 8080. Using the Launch Web UI button brings me to a yellowish website (url = http://localhost:8080/toggle) showing the following content:

Access Error: 404 -- Not Found
Cannot open document for: /toggle

I might have overseen an important thing/setting?