Hello @AutoGen_912647

In the WinCC Station Configuator it is very important that you use the forrect Server konfigration.

If you open the Server Konfiguration you need to use the ComputerName or the IP Address of the Unified RT Station. But It depends on what you have configured in your Webserver Certificate. If you have IP address there and use the computername in the Serverfonfiguration in Station configurator then It will not work and vice versa.

Check if you have configured your Unified Station in the correct way using this FAQ:

https://support.industry.siemens.com/cs/de/en/view/109806850

Bye Murof