It is not uncommon to have multiple Facebook business accounts. If the wrong one was selected when connecting the app, this is how you can configure the correct one.
- On the home screen, select the Apps tab in the bottom menu.
- Ensure the Connected apps are selected at the top of the screen.
- Choose the Facebook panel, and
- Press Configuration.
- Move the carousel until the correct Facebook business account is shown in the middle, and
- Select said account.
- Return to the home screen to start asking questions.