I am unable to update the domain WHOIS registrant's contact details as required by ICAAN, as the update process requires validation of the old email address, which is no longer working!
Expired Domain names with pending delete status cannot be renewed or modified. You may place a backorder to re-register the domain name after is deleted and becomes available for registration again on a first-come first-served basis.
Domain name stops working on expiry. You should renew it asap. Here is your timeline and options at each stage if you do not renew the domain name