Forfeiting an active bonus is easy! Simply click on the 'Avatar' icon at the middle bottom of the page. Then, you will see 'Active Bonuses' in the opening window.
Once you're there, you can easily forfeit any active bonuses by clicking on the red 'X' button.
When you click on the 'X' button, a pop-up message will appear confirming that you have chosen to forfeit the bonus. Once you confirm, the bonus amount will be deducted from your account.