When you work with AT+Explore you’ll need to delete any camera in the scene. The camera will be added at runtime by the plugin depending on the build template you choose.

The real camera is contained in one of the “Visitor” prefab: try searching for “visitor” in the project tab, you should be able to get a list similar to this:

Every Visitor has a suffix for the mode , VisitorVR is used for VR, VisitorAR for AR and the camera is always on a GameObject called Head, if you edit the camera component there all your edits will be available at runtime.