Eligibility. In order to use the Service, you must register for a Personal, Premier, or Business account. Users may only hold one Personal account and either one Premier or one Business account. Our Services are only available to individuals or businesses that can form legally binding contracts under applicable law. Without limiting the foregoing, our Service is not available to minors (under 18), persons who are suspended from our Service, or to persons who present an unacceptable level of credit risk. In order to receive credit card funded payments or use the Service to conduct business or in conjunction with a business, you must upgrade to or register for a Premier or Business account.