Refund and service notes

For refund or after-sales help, contact official support with the order information and issue summary. Scope, processing time and arrival timing follow the order page, course agreement or service rules confirmed in writing.

Course refunds are handled by official support with necessary order, payment and handling records retained for verification and after-sales support.

Submit only necessary service details through the official contact email or support channel. Official support will handle the request based on order records, course delivery status and service rules confirmed by both parties.

Send only the minimum necessary details; partially mask phone, email or account identifiers. To withdraw marketing-contact consent or correct contact details, contact official support.