Sometimes,your alexa echo may not connect to the Wi-Fi Network /internet for several reasons. For e.g,changed router,poor connection between alexa echo & router,changed wifi SSID or password,etc. So,if you want to reconnect your alexa echo back to WiFi you need to reset the device first & then initially set it up and configure WiFi for it. This guide walks you through the instructions for how to connect alexa echo to wifi via alexa app. For any other questions, contact us at 1-872-777-1246.