Why can't I always get JD? COM paper?

It may be a system problem, or it may be a requirement for coupons. For example, there are requirements for accounts, or they have been collected. Some coupons are collected by many people, and they are usually robbed at ten o'clock in the morning. The client can directly enter to pick up the ticket. The computer version is on the front page of JD.COM.com, and there are coupons in the lower left corner. You can click on more coupons below after entering.