Double-check for typos. Omron keys often distinguish clearly between '0' (zero) and 'O' (letter), but it's easy to mix them up. Also, ensure you aren't trying to use a Lite Edition key on a Standard Edition installer. Moving the License to a New PC
: The software generally requires a one-time purchase with a license key; updates usually do not incur extra charges unless there is a major revision. License vs. Media sysmac studio license key