Ring Doorbell Pro - black recording on app but fine online?

For the last couple of days I've been getting sound in my recordings in the app but it's just a black screen. I sent one to a friend of mine to show them and they responded that they could see the video. I then checked online and it was there. So it's recording but not showing up in the app? Any ideas? It's been fine for 2 years and just started doing this. Thanks!