Sorry to hear about that happening! It sounds like this might be related to the motion stop feature or even recording length setting. The motion stop feature for your video recordings, automatically stops the recording after a Ring device starts detecting motion. The devices stop after 20 seconds for battery-operated devices even if physically installed as hardwired, and 60 seconds for hardwired devices without a battery option. This saves on battery life and data charges.
You can certainly adjust your recording length by following the steps in this help center article. I hope this helps! 