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This is the Amazon Developer Forum. I would suggest getting in touch with customer service here who should be able to assist with your matter further.
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The skill did not begin with a roll call prompting users to awaken their Echo Buttons.
Alexa interaction with ESP32 chip.
GameEngine Echo Buttons - How to define sequence/pattern
Can the alexa-sdk be used to create an echo button skill?
Connecting Echo Buttons with FireTV or use TV a as a screen for Echo Dot