Having trouble instantiating with raycast using Google VR SDK and Cardboard

Hi guys! I'm creating a VR app for Cardboard and using the HelloVR demo scene as a little playground to test out some interactions. The Pop! Cardboard I'm testing on lacks a button and instead uses touch screen input. I have few teleporters set up using both gaze and pointer click detection to move the user around. There is also a planting area where the reticle changes from white to green to show the user they can plant flowers there. In the planting area, I am using a ray cast from the camera to instantiate flowers where the user clicks. It works beautifully in the editor, but when I run it on Android, everything works except the click to instantiate flowers. When I tap the screen, nothing happens. This is my first time developing in VR, so I'm having trouble understanding how the functions I normally use translate in the Google VR SDK. Does it have something to do with the event systems maybe? Does ScreenPointToRay even work with the VR SDK? I don't know!

Here's the code that works in the editor:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlantingZone : MonoBehaviour
 {
     MeshRenderer reticleRenderer;
     
 
     public GameObject flowerPrefab;
     public GameObject player;
 
     private float groundLevel = 0.2f;
     private bool canPlant = false;
     
 
     // Start is called before the first frame update
     void Start()
     {
         reticleRenderer = GameObject.Find("GvrReticlePointer").GetComponent<MeshRenderer>();
     }
 
     // Update is called once per frame
     void Update()
     {
 
     }
 
     public void GazeAt(bool gazing)
     {
         if (gazing)
         {
             //GetComponentInChildren<ParticleSystem>().Play();
             //get color component in the reticle prefab and turn it to green
             canPlant = true;
             reticleRenderer.material.SetColor("_Color", Color.green);
         }
 
         else
         {
             //GetComponentInChildren<ParticleSystem>().Stop();
             //get color component in the reticle prefab and turn it back to white
             canPlant = false;
             reticleRenderer.material.SetColor("_Color", Color.white);
         }
     }
 
     public void PlantFlower()
     {
         if (canPlant)
         {
             Ray ray;
             ray = Camera.main.ScreenPointToRay(Input.mousePosition);
 
             if (Physics.Raycast(ray, out RaycastHit hit))
                 {
                     if (hit.collider != null)
                     {
                         //Debug.Log("Did Hit");
                         Instantiate(flowerPrefab, hit.point, Quaternion.identity);
                     }
                 }
             
         }
     }
 }