I’ve been using a D225 doorbell for a week, along with two other Tapo cameras that have also been running smoothly during this time. However, a few hours ago, the D225 went offline. Despite trying various troubleshooting steps—rebooting, resetting, and attempting to reconnect through the Tapo app—it fails to complete the final pairing process. It goes past the connecting to wifi screen and then fails on "pairing yout Tapo device...".

Eventually, the doorbell speaks an error message stating it cannot connect to Wi-Fi.

The firmware was up to date and set to auto update.

To rule out signal issues, I’ve uninstalled the doorbell from the wall and placed it well within range. The Wi-Fi network and password are correct, as they are saved in the app and successfully used by the other two cameras. I even tested it on a different network, but the result was the same, "Pairing Failed" with a blinking red LED.

I’ve also uninstalled the iOS app, rebooted my ios device, reinstalled the app, and tried reconnecting again. Additionally, I rebooted my router, but none of these steps have resolved the issue.

What else can I try?