@Laich Please share more details about the issue you've encountered.

@czech_boi It seems like this device lost connection to the cloud server, so it cannot be controlled remotely, therefore it cannot be synced to third-party platform (or goes offline if it was...

@Chocolatee Check product manuals for the use guide. TP-Link Download Center For common questions about the Kasa KE100KIT, you may check this article. Frequently asked questions about KE100 KIT

@JorgensenIT Did you add the hub as a doorbell chime? How to add another chime for the Tapo Doorbell

@Moulders Ensure your Tapo app is updated. You may try to delete and reinstall the app. Do not enable VPN (if any) on your phone while using the Tapo app. Try to use another phone or tablet. If the...

@Humbertooo Ensure the Tapo app is updated. (What's the current version?) You may try to delete and reinstall it. Try to power cycle the hub. How is your hub connected to router, via WiFi or...