Netbackup Kops not delete snapshot volume on vSphere

Hi all
I did install success netbackupkops on OpenShift v4.13 , I create a protection plan for backup pvc (keep snapshot 2 hours after run), anything work normal but when snapshot expires it only delete snapshot on OpenShift but not delete on vSphere ( i use CSI vSphere). I don’t know are you facing the same problem or not. Please check it.