RDWeb Webclient version 1.0.11 websocket connection error

Hi, after install the webclient and bind certificate to port 3392, I get this error message.

WebSocket connection to 'wss://dc.redecr.intranet:3392/rdp' failed: Error in connection establishment: net::ERR_CONNECTION_TIMED_OUT

There is no firewall between the client and the server, the port 3392 is open on RDS Server 2016. 

Any ideas?

Thank You

Cesar Ramalheiro Jr