Overnight, it appears, my Amazon Echo integration got messed up:
My parents also use SmartThings and I have it setup so that I have access to both their hub and my own in the app. I rarely use this access - its mostly for helping them out when they have questions. They have an Amazon Echo connected to their account. I have an Echo connected to my own account (and only my own devices) and have been using this integration on a daily basis for a long time now.
Today, when I went to turn on the living room, Alexa claimed she didn’t know what living room was. Odd. I went in the Alexa app and found most of the devices were listed as “offline”. My direct-to-harmony integrations appear intact. I “discovered devices” assuming it would resolve it, but no change. I disable the Alexa skill and relink, confirming the correct devices were given access. No change. Then I notice the only devices not offline appear to be my parents… which have never been connected to MY Amazon account. I try to interact with them - Alexa complies. I call my parents and confirm I am turning their devices on and off.
As a nuclear option, I remove the Skill, SmartApp, forget all devices and groups, then relink and discover from scratch. Now my devices are no longer listed at all and only my parents devices are shown.
Now, the one wrench in this is that yesterday I decided to setup AskAlexa (following instructions listed here: http://thingsthataresmart.wiki/index.php?title=Ask_Alexa) but I don’t see how that could affect this. The app wasn’t installed on my parents hub nor were any of their devices involved. Just to be safe, I disabled the skill in the Alexa app, but didn’t make a difference.
This seems like a security issue - how am I controlling devices I haven’t granted access to Alexa to?