Hi Alexzander,
Once you have purchased your Booster Packs all you need to do is rejoin the server and go to the F4 Menu > Donate Tab and follow the instructions to claim your packs in-game. You'll then see a confirmation in the chat and your cash and items will be applied to your inventory.
Please let us know if you need any further help!

Hi Alexzander, Once you have purchased your Booster Packs all you need to do is rejoin the server and go to the F4 Menu > Donate Tab and follow the instructions to claim your packs in-game. You'll then see a confirmation in the chat and your cash and items will be applied to your inventory. Please let us know if you need any further help!