Your Radio has moved to a new Server and you need to update you Encoder in SAM.
What has changed, usually only the IP and the ADJ port change as we keep the user names and passwords of old radio server intact.
First, find your Encoder Window on SAM screen and click on correct encoder then on config button as in the pic below:
Then a new window will popup as below select server details TAB as in the pic below:
Then You will see the following screen after selecting server details:
You Need to change your IP and ADJ port here circled in blue below:
Then remember to save.