Today I faced for F1 visa and rejected. This was 2nd time rejection. I got F1 visa last year in Fall-15 for MS in Mathematics degree. But for my poor academic performance, University suspended me after Spring-17 and . My CGPA after 2 semester was 2.00, got 1 F , 1 D, 1 C and 3 B.I came back to my country and applied in a different university for MS in Mathematics program . The university accepted and awarded me a scholarship and graduate assistantship, which covers almost all cost. But I didn't get visa, may be for my previous poor grades. I already got rejection twice. What can I do now to get visa ?