If you are unable to find the Helix Credits in-game, please check your transaction history to make sure that the purchase went through.
If you the transaction appears but you didn't receive your Helix Credits, please allow some time for the balance to be updated. Though Helix Credits will be immediately added to your game in most cases, it might sometimes take up to 24 hours.
If you still require assistance, don't hesitate to contact us and provide us with a screenshot of your transaction history. Our teams will be happy to investigate for you.