Step 1
Download Rock Kommander and visit this store from the game
Tap the Merch menu in game and visit this store by following any product link
Step 2
If "Digital rewards active" displayed on the top, you are good to browse away and order your products as normal.
Complete your order by any payment method and your rewards are sent directly to your game.
Step 3
Check your in-game mail in your game and claim your rewards
as simple as that
