Supported Unity3D version
DPVR (a.k.a. Deepoon)'s Unity plugin is verified to support below Unity versions:
Unity3D 2018 (DpvrUnityPlugin 0.7.4 and later)
Please try to match with above version, otherwise the plugin might not be working correctly.
Import the DPVR Unity3D plugin package
Open Unity3D, choose Assets->Import Package->Custom Package. Select the downloaded unitypackage file and click import.
Replace the Camera
Delete the original Camera, and use /Assets/DPN/Prefabs/DpnCameraRig.prefab instead. Simply drag the prefeb DpnCameraRig to where the orignal Camera locates.