Update the Wi-Fi Settings for Your Echo Device. Open the Alexa App . Select Devices. Select Echo & Alexa. Select your device. Select Change next to Wi-Fi Network and follow the instructions in the app. If you don't see your Wi-Fi network, scroll down and select Add a Network (for hidden networks) or Rescan.
Update the Wi-Fi Settings for Your Echo Device from i.ytimg.com
To fix this, if you’ve already set up your Echo, Echo Dot, Echo Show, or other compatible Alexa.
