Difficulty in getting controller inputs using OVRInput.

Hi, 
I'm trying to program an experiment in Oculus Quest, but I'm unable to get the controller inputs with OVRInput. 
This is my first time developing in Oculus Quest and I don't have a lot of experience with Unity, so pardon my long post.  

I'm using Unity 2018.4.26f1 and I imported the latest oculus integration in the asset store.

And here's what I did:

1. Added OVRCameraRig to the Hierarchy. The only other item in the Hierarchy is my Text GameObject (called 'Instructions').
2. I wrote a test script (included below) to test OVRInput, and I was hoping that the GameObject would disappear when I press a button or pull a trigger on one of the controllers.



3. The Text GameObject is defined in the Inspector public field and these are my OVRmanager settings:



4. I followed the Build settings in the oculus documentation e.g., switch platform to Android, set texture compression as ASTC, and I chose Oculus Quest for the 'Run device' option. 
5. In player settings, under XR settings, VR supported was chosen and I selected V2 signing (Quest) under the Oculus SDK.
6. Also in player settings/other settings, API level 25 ('Nougat') was chosen.
7. Then I hit 'Build and run' and I do see my GameObject in the headset. 
8. I tried various OVRinput commands, made sure I included OVRUpdate, added extra lines recommended in Unity forums, e.g., OVRTouchSample (lines 4). 

But I can't seem to get the Text GameObject disappear when any button is pressed or when the trigger is pulled.
I feel like I'm missing something basic (maybe?), would be great if someone could enlighten me. I've ran out of ideas.

Thanks!