Welcome to Alfred Center!
If you have connectivity problem, please follow the troubleshooting steps here to solve the issue: https://alfred.camera/forum/t/1073315
For iOS device as Camera, please enable Guided Access to ensure your Camera not deter by other application and reduce app crash. You can find out how here:
Also, please avoid pressing home button or power key after you set up Camera in the future. Instead, you can tap the Lock icon on the bottom right corner.
Hope this helps!