I’ve signed in cloudflare for a free plan, and I’ve setting up everyting as required by Cloudflar including
DNS (I used the dns servername from cloudfare) , and used SSL full.
Then I’ve decided to delete my site from Cloudflare. After deleting the site and changing the DNS name server to the original (DigitalOcean nameserver) I have encountered a problem with SSL , when I write https://bioinfexperts.com , I got this error
( This site can’t provide a secure connection
bioinfexperts.com sent an invalid response.
When I test the SSL certificate using SSL Lab test, I get A, the SSL.
SSL Certificates are exists in the server. Ive tests using openssl command
I really dont know where is the
problem. Any help to solve this issue is appreciated
■Server: ubuntu 16.04 LTS / digital ocean.