DTTG - no complete sync

Hallo! I’m running DTPO 2.9.10 on Mac and DTTG on iPad iOS 10. I sync via MagentaCloud. The issue is that the sync on iPad does not complete, there is a triangle at the cloud symbol and the protocol shows a lot of entries (Information (Manifest-Datei "505…)). The intelligent group “not downloaded” shows 496 files. A download of these files is not possible.
Could anyone please help?? Thanks! Thorsten

Is a verification of the sync store (see Preferences > Sync on the Mac) successful? Otherwise you might have to use a different cloud service. MagentaCloud is fast but notoriously unreliable.