Hello Tiago, thanks for posting.
We are not sure why our adapter does not work with the 2017 MacBook Pro systems at this time, and we are working with our engineers to discover the cause and a resolution.
That said, we have found that our USBC-HDMI-CABLE (http://plugable.com/products/usbc-hdm…) does work well with the 2017 MacBook Pros.
Thank you,
David W.
Plugable Technologies
www.plugable.com/support