If you encounter an issue where your Call of Duty Mobile Shells voucher code shows as already used,

follow these steps to resolve the problem:

• Double-check the code.
  Ensure that you have entered the code correctly. Look out for any typos or extra spaces.
• Verify your account.
  Make sure you are logged into the correct Call of Duty Mobile account where you intend to redeem the voucher.
• Check previous purchases.
  Review your purchase history to confirm if you have already redeemed the voucher.
• Contact Codashop Support. If you are sure the code has not been used by you, contact Codashop support for assistance here. Provide the following details to expedite the resolution: 

1. Screenshot of the error
2. Screenshot of the voucher code
3. Garena/Call of Duty Mobile UID
4. Garena Call of Duty Mobile username:

Click here to learn how to redeem your Garena Shells Call of Duty Mobile voucher code.