Trying to understand if I'm eligible for AOTC. The question is if I got earned four years of college credits before. The answer is yes, but from another country.

Sorry, you are not eligible for the American Opportunity Credit. One of the requirements for the credit is that you have not completed 4 years of postsecondary education. If you have completed 4 years of postsecondary education it doesn't matter where you completed it or whether you used the American Opportunity Credit at the time.

You might be eligible for the Lifetime Learning Credit.

There is some disagreement on the topic. Here's some additional opinions on this subject:

https://ttlc.intuit.com/community/college-education/discussion/does-bachelor-degree-earned-from-othe...