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3.0.0 — 2026-06-04

Migrated to the Unity IAP v5 store API. Requires com.unity.purchasing 5.3.0+.
The legacy IStoreController / IExtensionProvider / IStoreListener model was replaced with UnityIAPServices.StoreController() and its event-based API (OnPurchasePending, OnPurchaseConfirmed, OnProductsFetched, OnPurchasesFetched, …).
Initialization now runs Connect() → FetchProducts(List<ProductDefinition>) → FetchPurchases() instead of ConfigurationBuilder + UnityPurchasing.Initialize.
Purchases are now confirmed against an order: Confirm(Product) is removed in favor of Confirm(PendingOrder). Confirm(PurchaseResult) is unchanged.
Removed the internal InitializeResult type.

PurchaseResult.Order (PendingOrder), plus convenience Receipt and TransactionId accessors sourced from Order.Info.
PurchaseType.Deferred for purchases awaiting external approval (e.g. Ask to Buy).
Non-generic Task.Timeout overload to support awaiting StoreController.Connect().

The high-level API (InitializeAsync, PurchaseAsync, Confirm(PurchaseResult), GetPendingList, Restore) is source-compatible with 2.0.0.

Unity IAP 5.0.0+ required. v4 and below are no longer supported.
Removed OnInitializeFailed(InitializationFailureReason) overload (no-message variant removed in IAP v5).
Removed OnPurchaseFailed(Product, PurchaseFailureReason) overload (replaced by PurchaseFailureDescription in IAP v5).

Fixed NullReferenceException caused by initializeCompletionSource never being initialized before UnityPurchasing.Initialize was called.
Fixed inverted _isInitialized guard in GetPendingList and PurchaseAsync — both methods were blocking when initialized and allowing calls when not.
Fixed missing return in PurchaseAsync after an early-exit error result.
Removed dead code in the List<InitializeDto> overload (a dummy product was added after ToArray() was called, so it had no effect).

Initial release.
Async/await wrapper for Unity IAP with pending-purchase queue, timeout handling, and iOS restore support.