I see, you’re trying to advertise your business via AdWords and they’ve temporarily suspended your account/site for this use because of errors with your site which the ad is pointing to.
It appears your host was just taking a loose shot in the dark that it might be theme related, further to that point, I’m not seeing any reason to believe this is a theme issue.
It appears that jQuery is not loading correctly, a common issue in WordPress with conflicting themes and plugins when not enqueued correctly. In this case, it is enqueued correctly in the theme so is likely a plugin issue.
Have you edited functions.php or added a child theme at all?
Can you please list the plugins you’re using?
Thank you.