Which of Syncfusion components you are using?
Syncfusion Essential Studio offers a massive library of high-quality user interface components for mobile, web, and desktop platforms. To use these components in your development workflow without watermark popups or compilation errors, you must register a valid license key. syncfusion unlock key link
Legacy versions required an unlock key during the setup wizard installation process. The portal provides a static unlock key for the installer. Copy the installer key directly from the downloads page. Which of Syncfusion components you are using