use the Services for any commercial activities, including, without limitation, any attempt to raise money for anyone or advertising or promoting a product, service, pyramid scheme or other multi-tiered marketing scheme, spam emails, chain letters or similar;</li> <li>attempt to gain unauthorized access to the Services, to credentials or accounts registered to others or to the computers, servers, or networks connected to the Services by any means other than the user interface provided by Yousician, including but not limited to by interfering or circumventing or attempting to interfere or circumvent any of the security components, security methods or regional restrictions used in the Services;</li> <li>