Cannot make OnCreate method async or things don't execute in correct order

src/Android/MainActivity.cs

@@ -25,7 +25,7 @@ namespace Bit.Android
     {
         private const string HockeyAppId = "d3834185b4a643479047b86c65293d42";
 
-        protected async override void OnCreate(Bundle bundle)
+        protected override void OnCreate(Bundle bundle)
         {
             ToolbarResource = Resource.Layout.toolbar;
             TabLayoutResource = Resource.Layout.tabs;
@@ -34,7 +34,7 @@ namespace Bit.Android
 
             // workaround for app compat bug
             // ref https://forums.xamarin.com/discussion/62414/app-resuming-results-in-crash-with-formsappcompatactivity
-            await Task.Delay(10);
+            Task.Delay(10).Wait();
 
             Console.WriteLine("A OnCreate");
             Window.SetSoftInputMode(SoftInput.StateHidden);

src/Android/MainApplication.cs

@@ -43,13 +43,13 @@ namespace Bit.Android
             }
         }
 
-        public async override void OnCreate()
+        public override void OnCreate()
         {
             base.OnCreate();
 
             // workaround for app compat bug
             // ref https://forums.xamarin.com/discussion/62414/app-resuming-results-in-crash-with-formsappcompatactivity
-            await Task.Delay(10);
+            Task.Delay(10).Wait();
 
             RegisterActivityLifecycleCallbacks(this);
             AppContext = ApplicationContext;

src/App/App.cs

@@ -1,7 +1,5 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
-using System.Text;
 using Bit.App.Abstractions;
 using Bit.App.Pages;
 using Xamarin.Forms;
@@ -13,7 +11,6 @@ using Bit.App.Controls;
 using Plugin.Connectivity.Abstractions;
 using System.Net;
 using Acr.UserDialogs;
-using PushNotification.Plugin.Abstractions;
 using XLabs.Ioc;
 
 namespace Bit.App