> For the complete documentation index, see [llms.txt](/llms.txt)


# Troubleshooting by symptom

Find where to look when coins seem to disappear or adventures are missing.



If something seems wrong as you build, start here. This page lists common problems and where to investigate.

## Coins disappear after restarting

Compare the player IDs before and after restarting. If you create a new account on every launch, you log in as a different player and do not see the coins collected previously.

If the ID matches, also check:

- Are you connected to the same GS2 project, region, and namespace?
- Are you reading the same wallet slot?
- Are you showing an initial value of 0 before loading finishes?

Related: [Login](), [Restart and continue playing]()

## Adventures are missing from the list

Check that Unity connects to the same place where you registered the quests. Compare namespaces first, then the group and quest identifiers used when loading.

If loading produces an error, use its message as a clue. If you use Studio's display assets, check that you regenerated them after adding quests.

Related: [Quest list]()

## Coin rewards differ from what you expected

If only the first completion grants extra coins, a first-completion reward may be configured. Check it alongside the normal rewards.

If the old reward is still granted after changing settings, check when the adventure started. It uses the settings from its start time, so finish any adventure started before the change and try a new one. Settings can take up to five minutes to take effect after deployment; wait a little before starting if you just deployed.

Related: [Receive rewards](), [Change settings]()

## Stamina changes do not match your calculation

Did stamina recover naturally while you were testing? If a product restores 10 and natural recovery adds 1 during that time, the total increase is 11.

When recovering near the limit, also check whether the settings allow stamina to exceed it.

Related: [Consume stamina](), [Buy stamina recovery]()

## You have coins but cannot buy a product

Check that the displayed balance is the one used for payment. Different wallet slots have separate balances.

Also check whether the product requires paid coins. This tutorial grants free coins, which cannot be used for paid-only products.

If both settings are correct, read the error details. A purchase can fail for reasons other than payment, such as a full inventory that cannot receive the item.

## Connection lost during a purchase

Restore the network connection and wait for completion or an error. If chapter 8's code shows **Retry the same purchase**, click it while keeping Play Mode running. This resends the purchase with the same `duplicationAvoider`.

Check that there is no error and inspect the coin and stamina changes. Clicking the regular purchase button after a purchase completes starts a new purchase.

Related: [Handle connection errors and repeated clicks]()

## If the problem persists

When asking for help, include:

- The chapter and whether you are following Studio or SDK steps.
- Your Studio, SDK, and Unity versions.
- What you did, what you expected, and what actually happened.
- The error message and when it occurred.
- Whether you changed the connection settings or account.

Before sharing logs, check that they do not contain passwords, tokens, or credentials.

[Back to samples and reference]()