If you have replaced the router in a space where your products are located in, you also need to replacethe product network registered on your app. If you don't, you might not be able to use the products.1. On the top left menu on the app's Home screen, > select "Device Settings."Touch the top left menu icon on the home screen and select Device Settings.2. From the list, choose a product whose network you want to change.Select a product card from the list, and tap "Change Network."3. Reset the Wi-Fi network by following the instructions on the screen.  *The screen shown on the instructions may differ from that displayed on the acutal app. The availability of products and services may vary depending on the models you own, the region/country you reside in, or the app and product versions.