Deletion of all ssl certificates associated with a domain name

I Want To Delete All SSL Certificate Associated With My Domain Name “www.phorein.com”.
Whenever I Check My Domain Name At “www.sslshopper.com” It Shows Me The Following Error.
Please Click On The Link : " SSL Checker ".

https://drive.google.com/open?id=1smdnUrktHved5F58I3ssXc59GJmKAXdj

my result https://www.htbridge.com/ssl/?id=dSmOQJ8K
del. cert > client area > control panel > SSL/TLS
configure
delete cert

@OxyDac said:
my result https://www.htbridge.com/ssl/?id=dSmOQJ8K
del. cert > client area > control panel > SSL/TLS
configure
delete cert

Thankyou For Your Help OxyDac But I Don’t Know What To Do. Can You Please Help Me Throughout The Process ?.

I Have Also Checked My Site In https://cryptoreport.websecurity.symantec.com/checker/
And It Says That " Certificate is not installed correctly ". You Can Check The Same By Going To The Link Above.