Xfinity app and dvr box are not in sync

All our shows are set to record on the box. The streaming app shows a couple of recordings and scheduled recordings, but they are nowhere close to being in sync.

An Xfinity tech was out today and fixed a connection issue. He said it would fix the syncing issue, but it did not. So frustrating as this has been going on for months. So unless we are home, we cannot watch so many of our recordings or see what is scheduled to be recorded.