You will find settings option by expanding the ‘More’ menu; in settings there is one option with the title:- ‘only logged-in customers will be able to ask questions along with this you will find a button to enable or disable this option, its default value is disabled you can change to enable to allow the only logged-in customer to ask questions.
When you install the app, it will automatically ask you to perform every step. However, you will find all the necessary instructions by expanding the ‘More’ menu; select the first option ”Installation” from the menu, and kindly follow each provided instruction to make the app working properly.Please refer to the below images & video.