According to Wei Gang Daily Booking official website, the reason why it can't be paid is that the version is too low, and some transactions don't support agency payment.

Wei Gang Tiantianding is a key service brand of Wei Gang dairy industry. It has pioneered the establishment of a fresh daily ordering, quality daily ordering, rich daily ordering and convenient daily ordering service system, and is committed to providing consumers with high-quality dairy products and relaxed, convenient and professional full-service services.