Hi Manuel,
Thank you for contacting Syncfusion forums.
Perhaps you did not include the required scripts or themes for rendering the control. Make sure that
ScriptManager is included in
_layout.cshtml page for rendering the controls, if unobtrusive mode is set to false in
web.config file. If unobtrusive mode is enabled, make sure that ejUnobtrusive.js script is included for rendering the control. Once the previous steps are ensured, now check whether your application run as expected in local before publishing. If the application runs fine then make sure that there no compilation errors after publishing. Take a moment to look at the
Deployment of ASP.NET MVC Syncfusion controls to Azure KB article for more information. If you face any compilation errors or console errors, provide us the details on the issue along with screenshots or video. It will help us provide solution.
Regards,
Prince