I am facing a similar issue. There is a folder named Services which when shared with new users, immediately shows a "Disconnected by Owner" message. All the other folders sync fine. Also it shows 0 of 0 peers online message while for other folders the peers show online. I have tried almost everything in vain, choosing a new identity, restarting CNG service, etc. but still not able to figure out what to do ?
Have even mailed support but the response comes after 3-4 days and even sending the logs to the support have not helped at all.
Please help me out.