Problem:

When I try to attach a photo, using my iPad’s camera, is totally black except for the controls. 

Cause:

The change is likely due to a settings change in iOS.

Resolution:

Check the following settings on your iPad:

• Settings > Privacy > Camera > Forms

and ensure that access to camera is turned ON.

More information:

If that doesn’t help, check that the camera lens isn’t covered, and whether the camera works ok with other apps. Also the iPad model and iOS version.

Also see:

Forms does not have access to my Photos