Video Streaming using Photon Fusion

I need help with this script. I need for everyone to see a Canva SlideShow play in real time using Photon Fusion from a web browser. However everyone can’t see the slideshow in real time.
using UnityEngine;
using Vuplex.WebView;
using System.Collections;
using Fusion;

public class AutoPlay : NetworkBehaviour
{
public CanvasWebViewPrefab canvasWebViewPrefab;
public GameObject quad;

private double networkStartTime;

void Start()
{
    RPC_SyncWithServerTime();
    // Enable autoplay for videos with audio
    Web.SetAutoplayEnabled(true);

    if (canvasWebViewPrefab != null && quad != null)
    {
        // Ensure the WebViewPrefab is initialized and loaded
        canvasWebViewPrefab.Initialized += (sender, e) => {
            // Create a material from the WebView
            Material webViewMaterial = canvasWebViewPrefab.WebView.CreateMaterial();

            // Apply the material to the Quad's renderer
            quad.GetComponent<Renderer>().material = webViewMaterial;

            // Load the specific Canva URL
            canvasWebViewPrefab.WebView.LoadUrl("https://www.canva.com/design/DAFXbvStASQ/HYqWLkH25um-jjqfNq19AA/edit");

            // Wait for the page to load completely, then click the play button
            canvasWebViewPrefab.WebView.LoadProgressChanged += (s, ev) => {
                if (ev.Progress == 1.0f) // Page load complete
                {
                    // Optionally, we can execute JavaScript to click the play button
                    canvasWebViewPrefab.WebView.ExecuteJavaScript(@"
                        document.querySelector('[aria-label=""Play""]').click();
                    ");

                    // Set the network start time using UnityEngine.Time.time
                  
                    
                        networkStartTime = Time.timeAsDouble;
                        RPC_SetNetworkStartTime(networkStartTime);
                    
                }
            };
        };
    }
    else
    {
        Debug.LogError("CanvasWebViewPrefab or Quad is not assigned.");
    }
}

void Update()
{
    // Check for VR input to trigger the play button
    if (OVRInput.GetDown(OVRInput.Button.One))
    {
        // Call the RPC method to click the play button for all clients
        RPC_ClickPlayButton();
    }
    // Check for VR input to trigger the video button
    if (OVRInput.GetDown(OVRInput.Button.Two))
    {
        // Call the RPC method to click the video button for all clients
        RPC_ClickVideoButton();
    }
}

[Rpc(RpcSources.StateAuthority, RpcTargets.All)]
public void RPC_ClickPlayButton()
{
    StartCoroutine(ClickPlayButton());
}

[Rpc(RpcSources.StateAuthority, RpcTargets.All)]
private void RPC_ClickVideoButton()
{
    StartCoroutine(ClickVideoButton());
}

[Rpc(RpcSources.StateAuthority, RpcTargets.All)]
public void RPC_SetNetworkStartTime(double startTime)
{
    networkStartTime = startTime;
}

[Rpc(RpcSources.StateAuthority, RpcTargets.All)]
public void RPC_SyncWithServerTime()
{
    StartCoroutine(SyncWithServerTime());
}

IEnumerator ClickPlayButton()
{
    // Wait for the WebView to be ready
    while (!canvasWebViewPrefab.WebView.IsInitialized)
    {
        yield return null;
    }

    // Execute JavaScript to click the play button
    canvasWebViewPrefab.WebView.ExecuteJavaScript(@"
        document.querySelector('[aria-label=""Play""]').click();
    ");
}

IEnumerator ClickVideoButton()
{
    // Wait for the WebView to be ready
    while (!canvasWebViewPrefab.WebView.IsInitialized)
    {
        yield return null;
    }

    // Execute JavaScript to click the video button
    canvasWebViewPrefab.WebView.ExecuteJavaScript(@"
        document.querySelector('.jXCxjw .NI12hw .FLDMzw').click();
    ");
}

IEnumerator SyncWithServerTime()
{
    // Wait for the WebView to be ready
    while (!canvasWebViewPrefab.WebView.IsInitialized)
    {
        yield return null;
    }

    // Synchronize the playback with the network start time
    double timeDifference = Time.timeAsDouble - networkStartTime;
    canvasWebViewPrefab.WebView.ExecuteJavaScript($@"
        var video = document.querySelector('video');
        if (video) {{
            video.currentTime += {timeDifference};
            video.play();
        }}
    ");
}

}