Can’t view live and won’t record anything! Video doorbell 2

As of yesterday my ring video doorbell won’t open live view any more! You press it on the app and it just says awaiting device for ages then eventually just saves a 30 second clip which when played back is just a black screen, yet if you scroll trough the timeline you can see all the screenshots the camera has taken? Has been working absolutely fine for about 7 months before this! Also gives me the notification in the app when it detects motion or when somebody rings the doorbell but again when I open these I get nothing, please help it’s driving me crazy!