Machine names when syncing settings (ST3)

I sync my settings across two machines so I would expect to be able to set it up as described here: http://www.codeivate.com/dropbox-support-bug-fixes

But in my settings I only see

"machine_name": "T450s"

So unfortunately both my machines are named "T450s" (Lenovo T450s / Apple MacBook Pro).

How can I find the ID generated by Codeivate?