If you're trying to redeem a code and it's telling you that the code can only be used in the United States, there are a few things you can do. First, make sure that you're actually trying to redeem the code in the United States. Some codes may only be valid in certain countries. If you're trying to redeem the code in the correct country, try contacting the company that issued the code. They may be able to help you troubleshoot the issue.