Hi,  iam searching for weeks now how to sync a local NAS to an Nextcloud Server inside a Datacenter. My Problem is that i have a slow Internet connection to access the NAS from WAN. So i want to sync the NAS Files to the Nextcloud Server and the same backwards.  Also, if I delete a file on the one side, it should automatically delete the same file on the other end.  The NAS is a Qnap. I tried every App, I experimented with Syncthing… nothing helped.  Does somebody have an Idea?  LuHl