If you would like to keep a user in-app, but link them to an FAQ, you can use deep linking. Deep linking is a way of coding a URL so that it will open inside of the app. This will prevent a URL from triggering a browser window outside of the app, and also empower the user to browse the FAQs if they need to resolve future issues.
You can use deep links to direct the user to an FAQ article by using the Publish ID, and you can deep link to an FAQ Section by using the Section ID in place of that. You can also use deep links within FAQs to redirect a user to another FAQ.