Door Bell 2020

Hi,I’ve searched but I don’t think this specific issue has been posted before (forgive me if I am wrong). We just purchased the Ring Doorbell 2020. I charged it via the UBS cord. I downloaded the app and when the doorbell is plugged in, it works fine. (Video and chime). However, the moment I remove the power source the phone shuts down. No lights, nothing. The app says the battery is at 100% but again, instantly dies the moment I unplug it. Anything I am missing or doing something wrong? Thank you!