Update website and now it’s directing users to “Not private” warning page

I recently made minor updates to our website an now all traffic is getting a warning that the connection is not private with the following warning:

This server could not prove that it is?prescottrussellbasketballclub.teamsnapsites.com; its security certificate is from?*.wpengine.com. This may be caused by a misconfiguration or an attacker intercepting your connection.

Prior to these changes, the site was operating perfectly fine. Where could this error be coming from? I have very little knowledge in the matter and can’t seem to pinpoint the source of this error.

The page I need help with: [log in to see the link]