Blazor Web UI does not get updated for one variable

Very new to Blazor, trying to create a simple form where the button updates text on the UI when clicked. I am changing the existing Weather page.

The form:

<form action="" method="post" @formname="main"><InputText @bind-Value="ApiKey" type="password" @onchange="PasswordUpdated" size="60"/><Button Type="submit" Color="ButtonColor.Primary" To="#" @onclick="ValidateClicked"> Submit </Button><AntiforgeryToken/></form>

Only added a <p> on top of the table below:

@if (forecasts == null){<p><em>Processing...</em></p>}else{<p>Result: @response.Response</p><table class="table"><thead><tr><th>Date</th><th aria-label="Temperature in Celsius">Temp. (C)</th><th aria-label="Temperature in Farenheit">Temp. (F)</th><th>Summary</th></tr></thead><tbody>        @foreach (var forecast in forecasts)        {<tr><td>@forecast.Date.ToShortDateString()</td><td>@forecast.TemperatureC</td><td>@forecast.TemperatureF</td><td>@forecast.Summary</td></tr>        }</tbody></table>}

Setting the field in OnInitializedAsync just works fine.

protected override async Task OnInitializedAsync()    {        // Simulate asynchronous loading to demonstrate streaming rendering        await Task.Delay(500);        var startDate = DateOnly.FromDateTime(DateTime.Now);        var summaries = new[] { "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching" };        forecasts = Enumerable.Range(1, 5).Select(index => new WeatherForecast        {            Date = startDate.AddDays(index),            TemperatureC = Random.Shared.Next(-20, 55),            Summary = summaries[Random.Shared.Next(summaries.Length)]        }).ToArray();        response = new ResponseModel() { Response = "Starting..." };    }

However, when I click the button, although the weather forecast is updated, response stays unchanged.

   private async void ValidateClicked()    {        await Task.Delay(1000);        response.Response = "Validating...";        var startDate = DateOnly.FromDateTime(DateTime.Now);        var summaries = new[] { "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching" };        forecasts = Enumerable.Range(1, 5).Select(index => new WeatherForecast        {            Date = startDate.AddDays(index),            TemperatureC = Random.Shared.Next(-20, 55),            Summary = summaries[Random.Shared.Next(summaries.Length)]        }).ToArray();