What happens if the school doesn't receive my final high school transcript by the July 1 deadline?

I wrote the address for the undergraduate admissions but it’s a little different from the address written on where the website says to send all transcripts, which I just found out. What happens if they don’t receive my transcript in time? Will my admission be rescinded?

All transcripts need to be postmarked by then. Meaning you need to send them by July 1. You’re fine, but you got two days. Hurry.

Oh, and even if they don’t receive it by then, they just place a hold on your account. If you don’t tell’em any thing, they do have the authority to cancel your account… but they most likely won’t. But man, I’m going through something mad scary too… I hope my admissions doesn’t get rescinded.