Thank you for the prompt reply and for providing the supporting article.
On the website, the article mentions the following:
"A nonresident alien in 2020 is not eligible for the payment. A person who is a qualifying resident alien with an SSN valid for employment is eligible for the payment only if he or she is a qualifying resident alien in 2020 and may not be claimed as a dependent of another taxpayer . An alien who received a payment but is not a qualifying resident alien for 2020 should return the payment to the IRS by following the instructions as described in Topic I: Returning the Economic Impact Payment."
In my case, in 2019 I was a non-resident alien but in 2020 I became a resident alien but did not receive any of the stimulus payments. According to this article, I am eligible to claim the stimulus payment on my tax returns, or at least that what I understood from it.
