I have Resilio running on a Synology NAS and a PC and iMac.
The Synology is syncing some subfolders of my "/documents" shared folder to the Mac (not selectively), but when I try to Selective sync the "/documents" root folder to the PC, nothing happens. A ".sync" folder gets created, but no other files or folders sync. The status shows as synced, the log doesn't show any activity or errors.
I can't figure out how to make it work, and whether it's related to the following, or to something else altogether...
EDIT: In the meantime I tried to sync another shared folder (root dir) without any shared subfolders, without success. I think we can scratch the "nested folder" hypothesis as to why it doesn't work.