Could you please explicitly specify that this plugin doesn't work with UWP -Subscriptions

[devmathews]

using YourOrg.Research;
using System.Diagnostics;
using Plugin.InAppBilling;

namespace YourAwesomeAppApp
{
internal class SubscriptionManager
{
private const string ProductId = "your_app_pro_monthly";

    public static async Task<bool> PurchaseSubscriptionAsync()
    {
        var billing = CrossInAppBilling.Current;
        try
        {
            var connected = await billing.ConnectAsync();
            if (!connected)
            {
                //we are offline or can't connect, don't try to purchase
                return false;
            }

            //check purchases
            var purchase = await billing.PurchaseAsync(ProductId, ItemType.Subscription);

            //possibility that a null came through.
            if (purchase == null)
            {
                //did not purchase
            }
            else if (purchase.State == PurchaseState.Purchased)
            {
                //purchased!
                if (DeviceInfo.Current.Platform == DevicePlatform.Android)
                {
                    //only needed on android unless you turn off auto finalize
                    var ack = await billing.FinalizePurchaseAsync(purchase.TransactionIdentifier);
                }

                CryptoCurrencyEngine.Instance.Settings.IsPremium = true;
                return true;
            }
        }
        catch (InAppBillingPurchaseException purchaseEx)
        {
            //Billing Exception handle this based on the type
            Debug.WriteLine("Error: " + purchaseEx);
        }
        catch (Exception ex)
        {
            //Something else has gone wrong, log it
            Debug.WriteLine("Issue connecting: " + ex);
        }
        finally
        {
            await billing.DisconnectAsync();
        }

        return false;
    }

    public static async Task<bool> CheckSubscriptionAsync()
    {
        var billing = CrossInAppBilling.Current;

        try
        {
            var connected = await billing.ConnectAsync();

            if (!connected)
            {
                //Couldn't connect
                return false;
            }

            //check purchases
            var purchases = await billing.GetPurchasesAsync(ItemType.Subscription);

            //check for null just incase
            if (purchases?.Any(p => p.ProductId == ProductId) ?? false)
            {
                //Purchase restored
                CryptoCurrencyEngine.Instance.Settings.IsPremium = true;
                return true;
            }
            else
            {
                //no purchases found
                return false;
            }
        }
        catch (InAppBillingPurchaseException purchaseEx)
        {
            //Billing Exception handle this based on the type
            Debug.WriteLine("Error: " + purchaseEx);
        }
        catch (Exception ex)
        {
            //.Logger.Error(ex);
            //Something has gone wrong
        }
        finally
        {
            await billing.DisconnectAsync();
        }

        return false;
    }
}

}

After days of research, it turns out this plugin fails win UWP Subscription. Rendering Null for var purchase = await billing.PurchaseAsync(ProductId, ItemType.Subscription); currently existing subscription at Microsoft store.

1. Works on Android Store. - Subscription IDs created
2. Fails for Microsoft store - Despite Subscription Product ID/Store ID submitted -as it returns null.

Used the above code and failed miserably when the users tried to subscribe to a "Monthly" subscription based add-on on Microsoft store. As it always returns null.

UWP Unsupported