The slightly longer answer is that anyone can use Earndit, but some rewards may have restrictions that limit them to US users. We will list the details when we are aware of restrictions for international users, but it is always a good idea to make sure the service you are getting a reward for supports your country before purchasing the reward with your Earndit points.
In the event that you purchase a reward that can’t be redeemed in your location just contact us and we’ll refund your points.
At the moment user profiles are built for US users, but we are working on adjusting it so international users can enter their location details. We will send out an update once that is finished. In the meantime feel free to enter your details in the city field and leave the state blank.