1. Open Weihai Smart Education Platform official website, and find contact information such as customer service phone number or customer service QQ on the homepage or related course pages.
2. Explain your situation to the customer service staff, inform them that you want to withdraw the registration of this course, and provide relevant identity information or order number.
3. The customer service staff will verify your identity and registration status according to the information provided by you, and help you to cancel your registration.
4. Wait for the processing result of the customer service staff and operate according to their requirements.