The exam simulator will automatically send you an email 7 days before it expires with links for you to buy an extension. (It'll also send this email on the day after it expired).
If you did not receive it, please contact This email address is being protected from spambots. You need JavaScript enabled to view it. and they will help.
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®