If the web.lic contains the ISLS feature, then follow these steps to resolve the issue:
1. Modify the feature in the web.lic, directly, by replacing ISLS with ISWS
2. Save the file to the desktop location
3. Copy/paste into the Statistica 13 application folder
4. Restart the WebStatistica service
Login again to Statistica Server (WebStatistica) and typical menus will appear: