Nothing can be done. Have you got a note with your passport cause i got one saying that your information is in global systems and it can be accessed by officials in canada. I was not comfortable traveling without POE so i emailed the high commision and they said you dont need poe to travel and they will issue you your study permit in canada. So as far as i can tell you as good to go cause i have done everything that i can do but all have said that there is nothing to worry.