Go into the Alexa App in the smart home section … under smart home skills where you originally “enabled” the skill. Go into the SmartThings side and “uncheck” / unauthorize Alexa to use that device.
A forget will not do this - they run health checks at least hourly (in reality is more often) and your “authorized” devices ( & routines) will pull back in.
Don’t get any such list. When I re-enable, I simply get a log in screen to
enter username and password. After I do that, I get a pop up which say it’s
enable, discover devices. No additional options.
Something is getting lost in the translation here, so let me start over.
In my Kasa app there are only 5 smart devices listed, 3 bulbs, a switch and
a plug. I had another switch and a bulb set up they were replaced.
But in the Alexa app, the bulb and the switch keep showing up. 5 active and
2 inactive (off line)
Everything works fine. The TP-Link devices I have set up on timers work,
and I can control everything through the Echo.
It’s just an OCD thing, that the 2 extra TP devices keep appearing in the
Alexa app. I “forget” them, but they just keep coming back. I don’t even
have to tell Alexa to discover devices. They just appear a short time later.
That’s because you posted your question in the SmartThings “Devices and Integrations” forum, so it was assumed that you were using your Echo with SmartThings.
“u/TE5LA • Jan 16, 2017, 7:06 PM
Alexa never forgets devices ,even if you completely remove them and “forget” them hundreds of times. They will always come back, that’s been my experience. I have tried uninstalling the device’s apps, removing skills from Alexa and reinstalling and they always return. It’s a big bug that needs to be fixed.”
Hijacking … to whine about Amazon violation of hue integration. Once you allow Alexa to discover the hue hub, you are stuck. Revoking Alexa permission to access Hue devices does nothing. I contacted both Amazon and Hue support will see what they have to say…