We are getting an error message when people try to log in to our web site

Hi,

I'm the web maintainer and I have no idea how to fix this. We're getting an error message when people try to log in to our site that says it's insecure.Your connection is not privateAttackers might be trying to steal your information from bwtoastmasters.com (for example, passwords, messages, or credit cards). Learn more about this warning
Why do we get this error? 
What can I do to fix it?

Thanks!

Cris Crawford

SSL certificate successfully created for the following domains [bwtoastmasters.com www.bwtoastmasters.com ].Cert Expires: Fri May 30 23:15:00 2025 UTC [bwtoastmasters.com.crt]

Thanks! Will we have to do this again when the SSL certificate expires?

Cris

The cert usually automatically renews except when there is an issue, then it has to be manually addressed.