OneSignal update documentations for EasySocial integration?

Hi I bought the Onesignal app to integrate push notifications and after struggeling to make this work, not get it to work yet, I can see that the documentation is not valid and updated now. Can you pls help with refresh how to make this installation files and setting work it would be fine..

https://stackideas.com/docs/easysocial/administrators/configuration/onesignal-integration

Thks.