DIAGNOSIS The camera is stuck in setup mode, usually because it lost its Wi-Fi connection or the network credentials changed.
FIX You need to force a factory reset and re-setup. Hold the setup button on the top for 20 seconds until the light goes off and then flashes again. Then, in the Ring app, go to Set Up a Device and follow the prompts to add it as a new device. Use the same Wi-Fi network name and password as your phone.
IF THAT DIDN'T WORK The camera might be too far from your router. For the Gen 2 Indoor Cam, the 5GHz band can be finicky. During setup, force your phone onto your 2.4GHz network first, then run the setup process.
HEADS UP If it keeps happening, there's likely a weak or unstable Wi-Fi signal at the camera's location. The Gen 2 needs a strong, consistent connection.