Databinding is not working in Release Mode iOS Xamarin

Question

Databinding is not working in Release Mode iOS Xamarin

Case 1:

Mode: Debug

Error: System.NullReferenceException: 'Object reference not set to an instance of an object'

Explanation:
No value is being set and passed to ViewModel, Controller.
Even I tried setting static values to variables.

Tried solution:
In the beginning, I tried many different solutions nothing worked.

Then I create a new project and moved all the code to the new project, then it started working.

Case 2:

Now the same issue I am getting in release mode.
No value is being set and passed to ViewModels and Controller.

I have already tried moving code to a new project.

How can I resolve this? I am not sure is this a Visual studio issue or Xamarin issue or Apple.

I have tried updating Visual Studio enterprise 2019 and Xcode on Mac.

Deleted and recreated Provisioning Profiles and Signing Identities.

In the beginning, I was not able to deploy my project on the Device in any mode Debug, or Release.
then I was able to resolve this issue by downloading the Worldwide Developer Relations - G3 (Expiring 02/20/2030 00:00:00 UTC) certificate from https://www.apple.com/certificateauthority/

I have a little bit of doubt about this certificate. is there something different certificate I have to choose?

The issue is no value is being set for example

LoginModel logtest = new LoginModel();  
       logtest.Username = uName;  
       logtest.Password = pWord;  

or

((LoginViewModel)BindingContext).IsLoading = false;   

I tried passing static values as well, did not work.
Same issue is happing to the all pages.

Here is the code for login function.
Code From LoginPage.xaml.cs

private async void LoginButtonClicked(object sender, EventArgs e)  
      {  
           await ((LoginViewModel)BindingContext).Login();    
      }  
  
  
  
protected async override void OnAppearing()  
        {  
                //App.Current.MainPage = new Navigation(new DashboardPage());  
                //load the login page                 
  
                Device.BeginInvokeOnMainThread(() =>  
                {  
                    try  
                    {  
                        ((LoginViewModel)BindingContext).IsLoading = false;  
  
                        ((LoginViewModel)BindingContext).RememberMe = DeviceStorage.RememberMe;  
                        if (DeviceStorage.RememberMe == true)  
                        {  
                            ((LoginViewModel)BindingContext).UserName = "******@user.ca";  //Trying set static values here  
                            ((LoginViewModel)BindingContext).Password = "password"; //Trying set static values here  
                        }  
                        //RememberMeToggle.Toggled += switcher_Toggled;  
                        ((LoginViewModel)BindingContext).Load();  
                    }  
                    catch (Exception ex)  
                    {  
                        //logger.Error(App.LogPrefix() + "Error opening Navigation Page: " + ex.Message);  
                        Console.WriteLine(App.LogPrefix() + "Error opening Load(): " + ex.Message);  
                    }  
                });  
        }  

Code from LoginViewModel.cs

public async Task Login()  
        {  
            IsLoading = true;  
            await TokenController.GetAuthorizationToken(UserName, Password);  
        }  

Code from TokenController.cs

public static async Task GetAuthorizationToken(string uName, string pWord)  
        {  
            bool tokenReturned = false;  
            string tokenGetResponse = string.Empty;  
  
             // Have tried setting them static values as well   
  
            LoginModel logtest = new LoginModel();  
            logtest.Username = uName;  
            logtest.Password = pWord;  
            logtest.AppType = Constants.AppDetails.APP_CODE;  
            logtest.SystemCode = Constants.AppDetails.SYSTEM_CODE;  
            logtest.Push.PushSystem = PushAddressModel.PushSystemCode.FireBase;  
            logtest.Push.Address = ((App)App.Current).PushNotificationToken;  
            logtest.Push.AppCode = Constants.AppDetails.APP_CODE;  
            string uri = URI.message_Chat_Endpoint;  
            (tokenReturned, tokenGetResponse) = await ApiFunctions.Post(logtest, URI.token_Endpoint, false);  
  
            if (tokenReturned)  
            {  
                try  
                {  
                    //deserialize the return object  
                    TokenModel token = JsonConvert.DeserializeObject<TokenModel>(tokenGetResponse);  
                    ((App)App.Current).token = token;  
                }  
                catch (Exception ex)  
                {  
                    Console.WriteLine("Error: " + ex.Message);  
                    //logger.Error(App.LogPrefix() + "Error: " + ex.Message);  
                }  
  
                Console.WriteLine("Profile Token loaded: " + ((App)App.Current).token.access_token);  
            }  
            else  
            {  
                Console.WriteLine("Error: Error loading profile token ");  
                //logger.Error(App.LogPrefix() + "Error loading profile token");  
            }  
        }