OneDrive Sync hangs on same point for hours

Message on "OneDrive - personal" window :

"2 Dateien werden heruntergeladen . 5.4MB von 5.4MB"

Message when the curser is over the OneDrive - synch symbol (righ lower corner of screen):

"OneDrive - personal

Download 5.4 von 5.4MB bei 0.0 KB/s, 2 Dateien verbleiben"

This message appears since hours and days, no progress so far.

I have restructured OneDrive -files on my Labtop. So I guess there are around 200GByte still to synchronize. 

I have set the feature in OneDrive Synchronization that the files are all to be kept on the labtop (where there I have originally placed them)

Can somebody help me, that the files ARE synchronized with OneDrive.

Thanks and greetings