Sync problem on phone



Because i don't get an right answer from the helpdesk and tyred of searching i'll try it here.

When i upload a file thru the app(mobile phone) they synchronize perfectly and you see the file on the laptop and web interface.
But when i place i file in the upload folder on my laptop he synchronize and you see it on the web interface but NOT in the app on the mobile phone.
You see home many "kb" there is in the map but he says there in nothing in it.

Is there anybody who cab help me out with this one?