Are you referring to the "Add App button in the app for IFTTT?"
Yes. Pressing it does nothing.
When attempting to set a dot to "IFTTT" mode by choosing it from the "I want to use my Iota for..." dialog on an iPhone 6S, nothing happens when I hit the blue "Add App" button. So even though I was able to link my dot account to IFTTT and select devices without issue, the dots do not ever seem to hit IFTTT (presumably since I haven't been able to actively configure them to do so).
@kunal_iota I would really like to use dot as a smartthings presence and/or motion sensor. It seems like it'd be a bit more accurate and able to identify individuals than a motion sensor would, but we'd still need smartthings to "understand" the output from the dot in the form of a momentary switch, and a per-person "motion" or "presence" sensor if "beacon" type sensors don't exist (I don't know, because I've never had one and never looked for it in the smartthings docs).