Is your previous Payoneer account suspended? If not, there might be a chance to re-add it. It's advisable to get in touch with customer support and explain the situation to them; they will guide you on the best course of action. It seems like you might have to contact Payoneer support first and request them to remove the funding source before adding a new account. However, it's recommended to reach out to Fiverr Support initially as they can provide the most appropriate solution. Make sure to clarify all the reasons for wanting to remove the old account and the need to add a new one.