If you have accidentally broken your World of Warcraft AddOns or settings, or overwritten your sync location with the wrong thing from another machine, Teleport: AddOns allows you to reset either your game or sync location from the other side of the sync.
To do this, simply expand the "Advanced Options" section of the Sync pane of the main window (section 4 in the screenshot below), then choose the correct option.
Note: As always, Teleport: AddOns will back up the AddOns and settings in your local World of Warcraft installation before changing anything. However, this does not apply to the sync location, so please back that up before resetting it.
Once you've chosen the correct option, press the "Sync" button to confirm your choice and begin syncing.
Note: You must manually press the "Sync Now" button to reset either your sync location or World of Warcraft installation. Automatic syncs will ignore this setting.