I have not personally experienced being denied bonus winnings due to terms I was unaware of. However, in the event that this does happen, it is important to carefully review the terms and conditions of the bonus offer and understand the specific requirements for eligibility. If it appears that the denial was due to a lack of awareness of certain terms, I would approach the situation by contacting the customer support team of the platform or casino and explaining the misunderstanding. It's important to remain polite and professional when discussing the issue and to provide any evidence or documentation that supports your claim. Ultimately, the approach would vary depending on the specific circumstances, but open communication and seeking a resolution would be the best course of action.