Confirm which profile was saved
Recovery is for an account previously saved with Play Games. Identify the Google profile used for that save before switching. A nickname is not proof of account ownership. If you only played as an unsaved guest on another installation, selecting a profile does not guarantee that guest account can be recovered.
Use the explicit recovery action
Open Settings and choose Recover Saved Account. Read the confirmation before continuing, especially when the current installation already has a guest balance. Recovery can switch to an existing account; it does not automatically merge two separate wallets or combine purchases from unrelated accounts.
Check the restored balance
After recovery completes, allow the game to connect and load the account’s wallet and owned items. If something differs from the account you expected, stop making purchases and contact support. Include a private purchase reference if relevant, but never send passwords, tokens or full payment-card details.