Improper user operation leads to black account number. In this case, the order cannot be placed normally. Users need to slowly increase the number to restore the normal account.

Change the JD.COM account for shopping.

Contact JD.COM customer service to explain the relevant situation.

JD.COM has a special risk control system. For example, JD.COM will rate your JD.COM account according to the user's operation, shopping behavior, network environment and other conditions and matters. When the rating reaches the threshold, the action of tagging your account will be triggered. Some people can't get coupons, some people won't let you sign in, and some people just won't let you place an order. There are various restrictions anyway. This restriction is euphemistically called "system check considering the security of your account".