Made a big mistake on my UCAS application. Help!!!

Hi guys. I applied last Sunday (less than two weeks ago) and only just realized I messed up on the education section of my UCAS. More specifically, I forgot to add two more subjects (Those subjects are Theory of Knowledge and Extended Essay IB) and now that I've already submitted it, I am not able to change it. I've visited the site that says "Amend qualifications" but say they cannot edit or add subject/module/unit. What do I do? I'm really stressed

You need to contact your choices directly to confirm you're completing the full IBDP and whether your predicted grade is out of 42 or 45.

I am doing the full IBDP and my predicted is out of 45.