To refresh your leaderboards manually and show updated scores, follow these steps:

1. Click the leaderboard. A menu will appear in the top right corner of the screen.
2. Click the Refresh button. (Note: The game selection menu may have multiple pages depending on how many games you own. You may need to use the <<< and >>> buttons to scroll through the menu and see all the buttons.)

To reset your leaderboards and erase all past scores, follow these steps:

1. Click the leaderboard. A menu will appear in the top right corner of the screen.
2. Click the Reset button. (Note: The game selection menu may have multiple pages depending on how many games you own. You may need to use the <<< and >>> buttons to scroll through the menu and see all the buttons.)

You can find a detailed leaderboard setup walkthrough and troubleshooting guide on this page.