many thanks for your help! I have achieved to connect it to Wifi using the sketch from kurjak, I'm able to add actuators and sensor, it appears on dashboard, however it's showing the status: "Unreachable".
If you have any idea what's wrong, please, let me know.
One thing more: Some days ago, I have achieve to connect but the PIN assignment showed as disabled (showing red crossed circle when I have put the mouse pointer on it. So, I have reset the Dashboard and now it's working fine. But always when I reconnect new board (with new token) I must to reset dashboard again. ... just if somebody has the same trouble, this was my solution.
Thanks again for your help.
I keen to make it working.