My Hard drive crashed last night, so when I installed the new hard drive, I obviously wanted to get all of my files on the new drive and start syncing again. I tried for hours to get Sync 2.0 to link my "new device", but to no avail. So, I swapped my entire synching infrastructure to SyncThing (https://syncthing.net/). It works wonderfully. It's what BTSync used to be. Thanks Sync 2.0 for being so bad that I was motivated to find a better product. The setup was simple, and it syncs to my Android phone way better than Sync ever did.