Hello Derek! . To set up the Alexa functionality, you must do it within the SmartThings app. Follow these steps on your mobile device:
1. Install and launch the SmartThings app from your mobile (smartphone or tablet)
2. Sign into your SmartThings account or create a new account
3. Tap the + button at the top right of the main page > select Device > AV > Samsung > Soundbar
4. After the Soundbar has been added, select the Soundbar from the main page
5. Tap on the 3 vertical dots on the top right corner and tap on “Alexa Settings” to log in to your Amazon account
I hope this helps. For further assistance, please contact Samsung Customer Support at 1-800-SAMSUNG, 8AM - 12AM EST (Ask for Soundbars), 7 days a week. Our Live Chat agents are also available by clicking on the ‘Support’ link on our website.
~ Samsung Solutions