Quick answer: Initiate the purchase, wait for the platform's authorization callback or backend webhook, grant the item only after a confirmed transaction, and reconcile pending purchases on next launch.

If players pay but do not receive the item, your code granted optimistically before confirmation, or never handled the confirmation. The purchase is not done until the platform says so.

How to fix it

1. Grant on confirmation only

Wait for the platform's purchase-authorized callback (or a server webhook) before adding the item. Granting on the click loses items when a charge is declined or canceled.

2. Finalize the transaction

Many SDKs require an explicit finalize or consume step after authorization; skipping it can re-prompt or refund the player automatically.

3. Reconcile on launch

On startup, query for any pending or unacknowledged purchases and grant them, so a crash between payment and grant does not cheat the player.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.

Reproduce it once with full context and the fix writes itself. The hunt is the expensive part.