Urgent Help Requested: SAT registration

I know it’s not possible to take both the SAT and the SAT Subject Tests on the same day, but is it possible to register for both, and skip one?

My November SAT Subject Test results haven’t yet been released and despite calling College Board around 17 times I still have no clue - the test booklet could be lost, for all I know.

I’m an international student, my waitlist deadline is in three hours, and I still don’t know which test to take, so I wouldn’t mind registering for both and deciding which one to take later on, when I get a reply regarding my November Test. If somehow the scores are lost then I’ll have to take the SAT Subject Tests again but in any other case (even if my scores are not as good as I expected; I’m certain I didn’t do too bad) I’d much, much rather bump up my SAT I score and register for that.

And no, they haven’t told me whether my scores are on the way or just not coming.

Any idea if it’s possible?

Anyone? Please, the deadline’s in an hour