Why was my new postal green card pass deducted $30? It is said that this is a short inference.

Hello, 30 yuan for one year. I think it's usually 3 yuan every month and 36 yuan every year. Probably a year cheaper. Haha, you can cancel the subscription, but I don't think the money will be refunded, and it will be deducted at most next year. That's the balance change reminder service. If your account changes frequently, you might as well set up one, which is safer and you can monitor your account at any time. You can ask me if you don't understand.