Having issues with Alexa Helper

You may have run into an Amazon reserved word. The first thing to do is see if the echo will accept that word at all, independent of SmartThings. The easiest way to do that is just to create a new group using the Amazon app ( not the smartthings app) and give it the name you want to use and put any of your existing working devices into that group. (A device can belong to more than one group so there’s no problem with your existing set up.)

If you still get the chime when you then try to use that phrase, it’s an Amazon issue. Report it to their support, but you may just have to work around it.

If on the other hand just setting up an echo group with that name works fine, then it’s something in the SmartThings integration. So check to make sure that you did authorize that device using the SmartThings app, and that you asked echo to discover new devices after you did the authorization. If it still doesn’t work then, report it to SmartThings support.

Tagging @MichaelS