I filed an amended tax return. Even though 3 months have passed, my tax refund has not been deposited into my account. I no longer live in the USA, what should I do?

I thought I would apply for my taxes separately, but the tax refund was applied for the same state at once. Anyway, that's why I made an amended return, and although about 3 months have passed, there is no change in the tax home section and no money has been sent. Since I don't live in the USA anymore, I can't call or check online.