There's no formal support for this tool but you are welcome to share your experience, discuss and ask questions in this MozillaZine thread.
The source code of the converter is available on GitHub.
Last update of converter engine: 2015-05-26
Disclaimer: This service is provided as-is, free of charge, and without any warranty whatsoever. The author and provider of this service shall not be responsible for any damages caused directly or indirectly by using this web application.