You can unsubscribe from subscription hosts in ApsaraDB for MyBase dedicated clusters.
Usage notes
Before you unsubscribe from a host, make sure that all the instances that are created on the host are released. Otherwise, the unsubscription fails.
Only the paid amount is refundable. Vouchers that are used cannot be returned.
If you purchase a host by participating in a promotional event, the following rules apply:
If the refund rules described in this topic conflict with the promotion rules, the promotion rules prevail.
If a no return policy is stated in the terms and conditions for the promotional event, you cannot unsubscribe from the host.
If a refund occurs, gifts such as vouchers and extended service periods are removed from your account.