Hello Rinaldo,
Thank you for your message.
Please note that all of our licenses, both commercial and free, are not restricted to a certain machine, i.e. you can register multiple Viewers with the same license key, even if it's a 1-tech license. For more information please also see
this page.
As for the connection issue please note that I've responded to your ticket #4231 that you've created to avoid duplication. You can see all of your tickets on the
My Tickets page.
Hope that helps.