To fix the opt out of Facebook platform error, please follow these steps:

1. Click the drop-down arrow on the top navigation bar, then click "Settings"

2. On the left side of your page, under General, click Your Facebook information

3. To the right of Off-Facebook Activity, click on View

4. Under what you can do, click Manage Your Off-Facebook Activity

5. Enter your password, and click continue

6. Under More options click Manage Future Activity

7. On the popup, again click Manage Future Activity

8. To the right of Future Off-Facebook Activity click on the button so that it turns blue

9 Restart your browser, and reload your game.