Nextcloud Linux Client doesn't ask for server

I installed the Ubuntu nextcloud-client package and didn’t connect to a server (because I didn’t have one yet.) Now that I do, the application lets me edit proxy settings but doesn’t let me enter a server. Did I install the wrong client software, or did I miss my chance to enter the server when it was first installed?

I see ~/.config/Nextcloud/nextcloud.cfg, but it only has ‘updateSegment’ and ‘geometry’ settings.

When I run the application, I get a “Nextcloud” dialog that has two tabs, General and Network. The General tab lets me edit a few general settings (but not the server or account information) and the Network tab lets me configure proxy and bandwidth settings.

I’m stuck - I’ve tried removing and reinstalling several different versions of the client, but it always behaves in exactly the same way.