In the Trados GroupShare login screen the GroupShare server cannot be changed and the server shown ("">https://ukcpgs01.rws.com/") is said to be unaccessible. How can I change the server address to the correct one?

In the Trados GroupShare login screen the GroupShare server cannot be changed and the server shown ("">https://ukcpgs01.rws.com/") is said to be unaccessible. How can I change the server address to the correct one?