If you subscribe to the ICDN product based on pay-as-you-go billing, no validity period is set and you do not need to renew it as long as you ensure that your account balance is sufficient. To avoid stop of service due to arrears, the account can be recharged in advance.
If you purchase the ICDN resource package product, you can place a new order before the resource package runs out or expires. The system deducts the traffic package with an earlier expiration date according to expiration dates of traffic packages.