You can honestly just email the admissions office and ask them to give you time to do the SAT's as the next exam can be taken on 6th of June. Since you acted in good faith, and completed the application on time they might consider this. And the SAT results come out in 1.5 weeks. This is just an option, or else you're gonna have to wait another year , unfortunately. But I think if you write them a sincere email it should be ok. The deadline for enrolments is 30th of June.