Hello Viv, I recommend you check your server's newly installed convert-status page like this:
Once logged in you should be presented with a list of domains that have finished conversion, along with any errors or warnings encountered while doing so. If you don't see it here, this domain was likely not converted from the DomainList.xml into the Domains.JSON file found in our installation directory and you should be able to manually add the domain entry here to bring it back online (with the SM service stopped.) If you need some help getting that done please submit a support ticket as we'd be happy to take a look for you!
Kyle Kerst
IT Coordinator
SmarterTools Inc.
www.smartertools.com