Ring 2 doorbell - button/motion alerts don't respond but live view does

My Ring video doorbell 2 has recently stopped responding when the button is pressed (no alert, no blue light). The motion alerts have also stopped working, despite being activated in the app. The live view works fine when I access that through the app. The battery is fully charged and shows a good connection with the wifi. I’ve reset the device using the button under the cover, but the problem persists.