meatware
The human element in a technological system. The hardware is the system, software runs on the system, the meatware is the user of the system.
The hardware and software are both fine, the problem must be with the meatware.
legacy meatware
Old or outdated operators (meatware) in a computer system. Typified by lack of understanding or capability for operating the system.
Person A: Does your business have a Twitter account?
Person B: We would, but our legacy meatware can hardly turn on their computers.
Person B: We would, but our legacy meatware can hardly turn on their computers.