Facebook OAuth "App Not Setup" issue

Hi everyone! I am having issue setting up Facebook OAuth for my Ionic application. I have created a test app on Facebook developer panel. I am using the cordova plugin: cordova-plugin-facebook-connect.

Also I found this demo of the plugin https://github.com/cordova-plugin-facebook-connect/cordova-plugin-facebook-connect. After changing the APP_ID and name to the name that I used for the app creation in Facebook panel, I try to use my account (which has administrator privileges) but I keep getting the following error:

I can’t change the application from development to live as many solutions found online, as it needs privacy policies URL, which I don’t have yet.

If anyone knows something more about it, please share. Also, I am open to other plugins suggestions for facebook oauth.