Why can i only buy $750 on Coinbase?

Could you please clarify why I'm restricted to purchasing only $750 on Coinbase? I'm curious to know if this is a limit imposed by the platform, my payment method, or some other factor. Is there a way I can increase this limit? Additionally, could you explain the reasons behind such limitations? I'm interested in understanding the safety measures and regulatory considerations that might be involved. Thank you for your assistance.