macOS: how to open nextCloud client window

After installation and configuration I cannot find a way to open the configuration window of the macOS (10.15.4) nextCloud client app (2.6.4.20200303). There is no nextCloud icon in the doc and also my menu bar is very full, so in case there is a nextcloud icon up there, it is overshadowed by the menu items of any application.

I also tried to just run the nextcloud app again, but oddly that does not bring up its window.