Vuforia AR Application does not display on Android

Hi. I am using the Vuforia sample application for ground planes(Ground Plane in Unity | Vuforia Library) and attempted to build it for Android applications.

The model is projected onto through the Unity Play view (through the Webcam), and so does the surrounding, peripheral objects. However, loading the built project onto any compatible Android device means the model does not show up and the surrounding peripheral objects do not show up either.

I have followed the Vuforia tutorials, and am unsure how to proceed.

I have tested this with 3 separate Android devices, and 2 different samples. I have followed the Unity Anrdoid export guides in Unity, and am unsure how to proceed. Please let me know if more information is needed. I am aware that Vuforia issues are supposed to go to the Vuforia SO but there are elements of this which might be Android and Unity-based.

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