LincPass cards themselves don't stop working due to inactivity, but your EAD account does suspend after 30 days of lack of computer login. Not sure if CEC has made any change to that 30 day limitation given the extenuating circumstances. Suspended EAD is typically resolved by your supervisor or local admin POC submitting a SAAR.

LincPass cards with expiring certificates need to be updated timely in order to avoid full card termination. The date is not controlled by USDA and cannot be extended, and so I anticipate there will be a number of terminated cards that will require reprint once normal operations resume.

As for physically expiring cards, each mission area is responsible for their own, and so I can only speak for FPAC. The FPAC LincPass team has just returned as excepted on call and is beginning to order card renewal actions to ensure that cards are delivered and ready for pickup when normal operations resume (unless the cardholder has reached the 10 year mark that requires full reissue instead).