If the LPro servers are down or undergoing maintenance, the tool may fail to verify your device's registration status.
The Lpro module was compiled against a different kernel version than the one currently running. The internal structures for AIO or ramdisk management have changed, causing the "not registered" callback to fail.
The error message "Device Not Registered" in LPRO AIO (and similar tools like Broque Ramdisk) typically means the device's unique has not been added to the developer's database.