Trying to install: what URL do I need to enter?

Hi, I just installed and activated the plugin. Clicked on Settings and the first field says: “URL”. There is no instruction on where to find the URL that is expected here. Clicking on the “Click here for more details” link (https://akaunting.com/apps/woocommerce), just tells you how to install the plugin, not set up the settings. Any help would be appreciated.