You can access the store on the control center of the Raptr/AMD Gaming Evolved client or on our website. You can find it at the top of the window by simply clicking 'Rewards':
Please note that if the store is empty when you log in or if you are seeing a smaller selection, this is probably because some or all of the rewards we currently offer are not available in your particular region. Regional limitations are set by the partner companies that provide our reward items and our system is designed to only show you the rewards you are eligible for when logged in. We apologize for any inconvenience this may cause and for any inability to get rewards that might not be available to you currently.