qt commercial support is not answering on the "contact us" requests
could you please help me with an email address from Qt Sales? they don't answer on Contact Us form. two messages were sent about 1 month ago.
Have you tried calling them? The numbers are at http://www.qt.io/locations/
If that doesn't help, mail me at tero.kojo (at) theqtcompany.com
I'm not in sales, but will get them to contact you.