Resolved - DeviceLock Update for Card Reader Incompatibility
DeviceLock detects PROXIMITY reader (KCY-125) as a keylogger making it inaccessible even when 'Full Control' for Everyone on all ports and device types is configured. Stopping DeviceLock Service does not revive the device.
This is a known issue fixed since DeviceLock 22.214.171.12428.
Upgrade to the latest version of DeviceLock (at least, to 126.96.36.19928).