If a subscription instance expires, the instance is locked and becomes unavailable. You can renew the instance to extend the subscription period of the instance.
Procedure
Log on to the PolarDB for Xscale console.
In the top navigation bar, select the region where the target instance is located.
On the Instances page, click the PolarDB-X 2.0 tab.
On the PolarDB-X 2.0 tab, find the instance that you want to manage, click in the Operation column, and then click Renewal fee.
On the Renewal fee page, specify a subscription duration.
Click Buy Now.
Click Pay.