Follow these steps carefully to install and activate SPSS v31/30/29 on Windows.
Open the provided IBM link and download the SPSS v31/30/29 Windows installer (.exe or .msi). Run it as administrator.
After installation, open SPSS. From the menu, choose "License Wizard". Copy the displayed Lock Code and prepare your Order identification code (from Customer service).
Back in the License Wizard, select "Authorized User License" → Next. Paste the License Code you received, then complete the activation process. Restart SPSS if prompted.