Azure Notification Hub not working in WUP app made on Unity3D - azure

I'm trying to use Azure Notification Hub to handle my MPNS WUP app notifications on a Unity3D generated project.
I used the following article to setup it in Visual Studio 2015 on the generated project: Getting started with Notification Hubs for Windows Universal Platform Apps
The app compiles and once it runs the following async code...
var result = await hub.RegisterNativeAsync(channel.Uri);
...the console prints the following log:
Exception thrown: 'System.Runtime.InteropServices.COMException' in Microsoft.WindowsAzure.Messaging.Managed.dll
WinRT information: ResourceMap Not Found.
Exception thrown: 'System.TypeInitializationException' in Microsoft.WindowsAzure.Messaging.Managed.dll
Exception thrown: 'System.AggregateException' in mscorlib.ni.dll
Exception thrown: 'System.AggregateException' in mscorlib.ni.dll
Exception thrown: 'System.AggregateException' in mscorlib.ni.dll
Exception thrown: 'Microsoft.WindowsAzure.Messaging.RegistrationException' in Microsoft.WindowsAzure.Messaging.Managed.dll
Exception thrown: 'Microsoft.WindowsAzure.Messaging.RegistrationException' in mscorlib.ni.dll
Exception thrown: 'Microsoft.WindowsAzure.Messaging.RegistrationException' in mscorlib.ni.dll
Exception thrown: 'Microsoft.WindowsAzure.Messaging.RegistrationException' in mscorlib.ni.dll
Exception thrown: 'Microsoft.WindowsAzure.Messaging.RegistrationException' in mscorlib.ni.dll
OnWebCamTextureToMatHelperDisposed
(Filename: C:\buildslave\unity\build\artifacts/generated/Metro/runtime/UnityEngineDebugBindings.gen.cpp Line: 45)
Exception thrown: 'Microsoft.WindowsAzure.Messaging.RegistrationException' in mscorlib.ni.dll
Unhandled 'Platform.COMException' exception caught! - 'The text associated with this error code could not be found.
The type initializer for 'Microsoft.WindowsAzure.Messaging.Http.Resources' threw an exception.', Sender: '<null>'. Missing try/catch blocks.
(Filename: C:\buildslave\unity\build\PlatformDependent/MetroPlayer/MetroDebug.cpp Line: 41)
My current setup is:
Unity3D 5.4.3p4
Visual Studio 2015
WindowsAzure.Messaging.Managed 0.1.7.9 (I also tried with 0.1.7.8 that is used in the getting started article)


We tested also this on a native WUP project using the same how-to article and had the same problem.
In the end we discovered it was not related to Unity or the project configuration as we thought, but to the Azure Account.
The Pricing Tier on the the Microsoft Azure Notification Hub was defined as Free (limit to 500 Active Devices), after changing it to Basic (limit to 200K Active Devices) the exception is gone.
This was a really bad experience and took some days for our team to find out the reason as the exception has no real link to the actual issue nor the Microsoft Azure Dashboard has any notification related to the limit on the push registrations.

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terminating with uncaught exception of type CKException
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I am running a application I made in service fabric on the local dev cluster.
when debugging and seeing the output, its filled with
Exception thrown: 'System.InvalidOperationException' in Microsoft.ServiceFabric.Data.Impl.dll
Exception thrown: 'System.InvalidOperationException' in Microsoft.ServiceFabric.Data.Impl.dll
Exception thrown: 'System.InvalidOperationException' in Microsoft.ServiceFabric.Data.Impl.dll
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I'm seeing exactly the same thing, but in production as well and agree that I don't think it's a problem, though it will impact performance.
I'll put a few more things in context to hopefully help other people who see the same thing.
Here's my code which works correctly and I don't see the exception being thrown all the way up.
Log.Information("About to record activity for {Machine}", machineId);
using (var tx = StateManager.CreateTransaction())
{
await map.AddOrUpdateAsync(tx, machineId, _ => new SystemInfo { LastSeenUtc = timestampUtc }, (_, info) =>
{
info.LastSeenUtc = timestampUtc;
return info;
}).ConfigureAwait(false);
await tx.CommitAsync().ConfigureAwait(false);
Log.Information("Just committed transaction {Tx}", tx.TransactionId);
}
Log.Information("Recorded activity for {Machine}", machineId);
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[07:48:27 INF] About to record activity for d6441d45e1834db7860c00a8074652f9
[07:48:27 INF] Just committed transaction 131489813076754311
[07:48:27 INF] Recorded activity for d6441d45e1834db7860c00a8074652f9
Exception thrown: 'System.InvalidOperationException' in Microsoft.ServiceFabric.Data.Impl.dll
Transaction 131489813076754311 is committing or rolling back or has already committed or rolled back
And I see the stack trace as
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