Reschedule Exam

Has anyone ever rescheduled their exam to AFTER the exam voucher expiration date?

My voucher expires next week but I don’t think I’m ready for the exam even though I’m scheduled to take it in a few days. I’m on the Pearson website and it looks like I can proceed with rescheduling the exam. Will any problems come up if I reschedule to a later date? Will they cancel my exam later even if I’m able to successfully reschedule it now. I did have the exam cancelled before by Pearson due to medical reasons so not sure if that affected the expiration date of the voucher.

ISC2 is closed today or else I’d contact them directly. I’d hate to reschedule and then ISC2 say the exam or results aren’t valid (if I pass) since the voucher would technically be over a year old.

Thanks for any guidance or help!