Handle issue where steam fails to login due to incorrect device codes

Steam Desktop Authenticator/UserFormAuthenticator.cs

@@ -1,12 +1,14 @@
 using SteamAuth;
 using SteamKit2.Authentication;
 using System.Threading.Tasks;
+using System.Windows.Forms;
 
 namespace Steam_Desktop_Authenticator
 {
     internal class UserFormAuthenticator : IAuthenticator
     {
         private SteamGuardAccount account;
+        private int deviceCodesGenerated = 0;
 
         public UserFormAuthenticator(SteamGuardAccount account)
         {
@@ -20,12 +22,31 @@ public Task<bool> AcceptDeviceConfirmationAsync()
 
         public async Task<string> GetDeviceCodeAsync(bool previousCodeWasIncorrect)
         {
-            return await account.GenerateSteamGuardCodeAsync();
+            // If a code fails wait 30 seconds for a new one to regenerate
+            if (previousCodeWasIncorrect)
+            {
+                // After 2 tries tell the user that there seems to be an issue
+                if (deviceCodesGenerated > 2)
+                    MessageBox.Show("There seems to be an issue logging into your account with these two factor codes. Are you sure SDA is still your authenticator?");
+
+                await Task.Delay(30000);
+            }
+
+            string deviceCode = await account.GenerateSteamGuardCodeAsync();
+            deviceCodesGenerated++;
+
+            return deviceCode;
         }
 
         public Task<string> GetEmailCodeAsync(string email, bool previousCodeWasIncorrect)
         {
-            InputForm emailForm = new InputForm("Enter the code sent to your email:");
+            string message = "Enter the code sent to your email:";
+            if (previousCodeWasIncorrect)
+            {
+                message = "The code you provided was invalid. Enter the code sent to your email:";
+            }
+
+            InputForm emailForm = new InputForm(message);
             emailForm.ShowDialog();
             return Task.FromResult(emailForm.txtBox.Text);
         }