Buy Hoodrich Coins and spend them in the in-game Coin Shop.
After purchasing, join the server and use /coinshop. Open the Redeem tab, enter your Tebex redeem key / order number, then press Confirm to claim your coins.
Coins can be used toward available items, vehicles, weapons, perks, and exclusive shop rewards.
You can find your Tebex order number here:
https://checkout.tebex.io/payment-history
If you have any issues claiming your coins, open a ticket with proof of purchase.