Universal SSL always Authorizing Certificate ,...... some days

The last time, more than 24 hours, the certificate is still not authorized to complete. I have tried several times before, and the certificate authorization took more than 4 days,and not to complete.
Please tell me why… My domain name is “microsoft-asia.com” , and the “Let’s Encrypt” certificate has been deployed on the server. https is work ok ,when not use CDN.
Request #1551751

How long has it been “authorizing” for?
some days 1~4

Have you contacted Cloudflare support?
Request #1551751

What is the plan level for the domain in question?
free plan

What error, if any, is displaying on your site at the moment?
Authorizing Certificate forever…

A post was merged into an existing topic: SSL Certificate Delays - What should I do?