@dtana2021 , please before we can help , we need to understand your situation. Therefore please can you answer the following questions:
1. which country are you from?
2. When did you enter the USA a J 1 (?) person? You are J-1 what -- a student/trainee, a researcher/ teacher/ prof or ? ? Was this your first entry into the USA? If you were her earlier , then when to when and with what visa?
3. Is this your first year filing US taxes?
4. What type of credit are you talking about?
Generally, once your return has been accepted for processing by the IRS ( I note that you have already received your refund from the state , generally implying that the IRS had accepted your return), there is not much you can do but wait till you hear from them. If they find an error , they will contact you and then follow their advice. If you do get your refund and IRS has not challenged your "credit" then you can always return the credit to them with a note explaining why you think you should not be eligible for the credit.
Please answer my questions and I will come back and help as soon as possible
pk
