Hello I hope someone can help. I have a ZM-SS7009D8-5 V43.91.1.04 with a 1TB sata drive. I have a few dates I need to look at from Nov. 2017 but when I bring the date up the calendar dates are not blue and it says no video available. The drive has data on it. Can some one tell me what I need to do to retrieve and view playback?