我有一个华为云购买的.com域名，我已经在华为云将DNS解析服务器更改为cloudflare指定的两个了，可是在cloudflare还是无法激活，提示我更换域名解析服务器，可是明明已经按要求更换好……见下，图：
You probably just changed the NS records. You need to change the main name servers, usually in a WHOIS section of the domain registrar:
You also have DNSSEC enabled, which should be turned off before changing name servers:
Name Server: ns1.huaweicloud-dns.cn
Name Server: ns1.huaweicloud-dns.com
DNSSEC: signedDelegation