I applied for a Canadian student visa. After a month, I got a rejection saying that "Your proposed studies are not reasonable in light of one or more of: your qualifications, previous studies, missing marks sheets, academic record, level of establishment, language abilities, or your future prospects and plans".
I am a physics graduate applied for master in mathematics. Can this be one of the reasons? My question is should I upload all my transcripts and certificates from school, take a written letter from the McMaster professor stating that I qualify for the program, write a personal statement while reapplying?
What should be there in the personal statement? I don't know what "level of establishment" means. Please let me know asap. Thanks in advance.