Last 8 jumps aren't syncing

At this time after 8 jumps over the past two days the alti is accurate. As well the ride up is and that data. The results…none of them are accurate. Only the alti is accurate. And now those 8 jumps won’t sync. They are telling me there are 8 to sync but do not do it. However if the alti works that is all that can be used.