Hello Ao,
In your NIF, you've indicated that you'll be pursuing Summer Session E. Can you please upload proof of enrollment in this course, but obtaining a letter of enrollment from the department you'll be taking the course in? This letter of enrollment can then be uploaded back into your NIF from here:
https://io.berkeley.edu/upload/NIFMSummerStart
Thank you Ao,
Berkeley International Office
2299 Piedmont Ave.
Berkeley, CA 94720
(510) 642-2818