BitDefender 3.5 Management Server Connection Error

I have installed BitDefender Version 3.5 and have been using it for less than 5 months.
Recently, it does not connect to the Management server and gives out an error message: "Error connecting to the BitDefender Management Server.
The BitDefender Management Server service is stopped or the port value is incorrect!"

Error:
Error connecting to the BitDefender Management server.
The bitdefender Management server service is stopped or the port value is incorrect.
