How do I change the size of the team viewer application window ?

BWNCL Posts: 1

I have just installed teamviewer-host version 15.30.3 on a system with Ubuntu 20.04.4 LTS with GNOME version 3.36.8

Opening Teamviewer gives an application window too small to be of any use as seen here.

I cannot resize the window on the desktop.

The window si too small to allow use of team viewer. The settings button does work and opens the settings window a suitable size but there seem to be no relevant settings available.

How is the size for the application window determined ?

Is there some way to increase the size in a config file and then reopen the application ?