Hi. I have got an 2 Echos registered to my Amazon Account I have added smartthings hub and through the Alex App everything works fine but when i use voice control from the echo it can find any devices either to control or add.
I cant understand if the app works well and the echo is connected to the same amazon account why the echo cant see smartthings
Have you tried asking Alexa which account it is on your Echo? If you have another person in your household it might be worth switching accounts to double check. Otherwise and in general, always make sure to keep your apps and devices updated.