Security issues with website. _PLEASE HELP

PLEASE HELP - Having security issues and can not get the problem fixed.  This has been going on since Thursday last week.

THANKS!

You have a common name error, your SSL is set for www.prestigeballroom, but your common domain name does not include the www.  The WWW should not be part of your official domain name. You can see the error here: 

https://www.sslshopper.com/ssl-checker.html#hostname=prestigeballroom.com

If you enter www.prestigeballroom.com there is no error. 

thank you - how do I fix that ?

thank you 

I see that you fixed the issue, very good!