Unable to create / renew a HTTPS certificate

Hello, I received the following message when logging into our site, yptoastmasters.org, as an admin:

We were unable to create / renew a HTTPS certificate for your custom domain: www.yptoastmasters.org
This means that you may not be able to access your website using https:// with your custom domain
name after any existing certificates expire.

Can someone please advise on what I should do to resolve this?

I saw another user detailed a similar issue in another topic ( support.toastmastersclubs.org/2011-10-23...-a-https-certificate ). I made a new topic so as not to piggyback off their topic. Apologies if this was not the right move.

SSL Cert Created/Renewed for ( yptoastmasters.org ):

Thank you very much for your help, Brian!