It is about a year I am in the U.S. and have an account at Bank of America. I also have a travel reward credit card, but when I wanted to get my credit report from Credit Karma, I was told they could not find my information, or there was a mistake in my information, but I am sure I did not make any mistake.
The only thing I am concerned about is that I have not linked my Social Security Number to my bank account. Honestly, I do not know how to link my SSN to my bank account! I searched the internet, but I could not find any useful hint.