"To Create A Front Page Like On Illdy Theme Demo" -isn't working

After downloading of theme “Ildy” I found that I can’t customize my theme like on your Demo :frowning:
What’s wrong?((

Here links with screenshots:

Hello there,

I hope you are doing well today.

Please ensure that you have installed the Illdy companion plugin via Appearance > About Illdy > Recommended Plugins. This plugin has addition widgets that are used in the theme.

Best Regards,