Got into target (Warwick Econ) but low a levels

I got accepted for economics at warwick but I had extenuating circumstances and was allowed in with ABB which i know is surprisingly low for warwick econ. I’m concerned about when I apply to spring weeks I’ll get screened out as the minimum requirements for a levels is usually higher or it just isn’t competitive. Is there a way I can mention that’s it was under extenuating circumstances at all, would appreciate any advice.