If your monetization application has been approved, you can check your Diamond history, Point exchange history, cash out history, and deposit history by going to the [Diamonds Owned] page and then to [Cash Out/Manage Diamonds].
How to Check Your Diamond History, Point Exchange History, and Cash Out History:
1. Go to [My Page] -> [Diamonds Owned] and tap [Cash Out/Manage Diamonds]
2. You will be brought to the web page upon tapping the "To the Website" button
3. Tap [Diamonds Received/Usage History] on the displayed page
"Diamonds Received/Usage History" will not be displayed if you have never been awarded Diamonds.
How to Check Your Deposit History:
1. Go to [My Page] -> [Diamonds Owned] and tap [Cash Out/Manage Diamonds]
2. You will be brought to the web page upon tapping the "To the Website" button
3. Tap [Payment History] on the displayed page