Virtual Webcams drops signal in 5 minutes

I tested free version and liked it so much I purchased the lifetime studio. Now my virtual webcams close connection to computer after around 5 minutes. I’ve tried all sorts to fix. I have removed the devices and uninstalled software and reinstalled. Tried running in in Safe mode which closed and came up with the apple error report almost straight away. The free version the virtual cam ran so long the battery was nearly flat on the iPhone over an hour and a half. I have also done the SMC and PRAM too