The software is highly regarded in the mobile repair and flashing community for its ability to handle complex USB data transfer over long distances.
Ensure you aren't trying to use a V2.3 key on a newer version (like V2.4 or V2.5). Usb Redirector Technician Edition V2.3 License Key
Version 2.3 is a specific build of this program. It includes features to make remote work easier. The software is highly regarded in the mobile