Works, but cannot find the settings

I just installed and tested this and it works, but I cannot get to the settings for changing the amount of days that determines whether a product is new or not.

I’m actually surprised it worked at all, considering the last review was more than 2 years ago.

A plugin update seems to be in order, otherwise I probably will eventually have to switch to something else that is more up to date with the current version of WooCommerce (3.4.3)