Applied to Waterloo 1 day before deadline

so I applied to Waterloo 1 day before deadline. I understand I should have done it before and I really regret not doing it before.

the problem is I now need to write an AIF and a supplementary information form.

how long did you get access to Waterloos portal after payment because I fear I might not have enough time to write everything clearly and submit it on time.

is anyone in a similar situation or has been before that could guide me? I’m stressed AF because Its 250 dollars for an application and i dont want to fuck it up.