The FAA has updated what’s known as the Airman Certification Standards (ACS) for Remote Pilots. Part of this revision includes the requirement to keep your certificate current after 24 months. Unfortunately it will require a FAA knowledge exam and the attendant testing center fee (currently $150.) For those of us in more rural areas, it means travel to an FAA-approved testing facility. I already know of one currently certificated Remote Pilot who said they wouldn’t renew because of this onerous requirement.
You can download a copy of the revised ACS below.