When you have cloned a virtual machine whit running teamviewer the new machine have the same id of source VM.
For change the id in the new machine, stop the service and  :

Remove ClientIC and ClientID.
 64 bit
HKEY_LOCAL_MACHINESOFTWAREWow6432NodeTeamViewerVersionX

32 bit
HKEY_LOCAL_MACHINESOFTWARETeamViewerVersionX