Hi,

Did you check if you are connected to the correct environment and server? If you open your Object Browser, there should be a small arrow at the top which allows you to switch environment and change server. Check if you are connected to the correct environment and server.

Good day @davidedpg10,

Would you please try the following please enable full K2 Logging and attach the resulting logfile after restarting the service.
(Use your original license key or older keys)
Logging information can be found here: 

http://www.k2underground.com/blogs/johnny/archive/2007/10/06/how-do-i-use-logging-in-k2-blackpearl.aspx 

This should indicate what the problem is when the server starts. 

Should you find the above information helpful (leading you to the answer) to your problem, kindly mark it as a "Kudo and/or Accepted Solution" as this will help others seeking for relevant information in future.

Thank you.

Kind regards;

Dumisani.