Dear user, COS for your account (account ID: 200022929753, name: [email protected]) will stop supporting setting new default CDN acceleration domains from 2022-05-09. From then on, this feature will be unavailable in the console for the buckets that never used default CDN acceleration domains, without affecting the buckets that are using or once used such domains. Please visit https://intl.cloud.tencent.com/document/product/436/44838 for details.