The CIV Address and the CIV Baud Rate set in the program under Communications | Set Radio ID.  These are found in the menu of the radio (MEnu | Set | Connectors | CI-V).  

In the radio, these are under CI-V Address and CI-V Baud Rate in the Connectors section of the Menu. 

Also check CIV-Transceive - Change from what it is... on to off or off to on... seems it clears a buffer of some kind when you do.   Then be sure to set to ON. 

USB Serial Function - Be sure it is set to CI-V.  Be suspicious if they are using RTTY in any form.