Hi Seweryn, 🙂

To change this, simply add the following code snippet to your website:

/**
* Hide page header when selecting 'Sidebar Template: Right' page template
*/
.page-template-template-classic-9-3-cols-left .grimlock--page-header{
	display:none;
}

To add this code snippet to your site, we recommend that you paste it to the Custom CSS panel of your WordPress Customizer. Just go to your dashboard and navigate to “Appearance > Customize > Additional CSS”.
Pasting your code snippet there should do the trick for you.

Also, it’s important to remember that we share snippet only to solve issues with our theme. Any further request for CSS snippets will have to be part of a defect that needs to be fixed urgently. No snippets will be shared otherwise.

If you want to go further with the customization of your website, we advise that you require customization work.

Regards,

You’re welcome Seweryn. 🙂

If you’re happy with our theme, feel free to review our theme on our Themeforest page:
https://themeforest.net/item/cera-intranet-community-theme/24872621

It’s very appreciated and it helps us making our products more known to new potential customers, which allow us more time to improve the quality over time and develop new features. It’s a win-win !

And by doing this, you will be making a great contribution to our community! #SharingIsCaring ❤️

Thank you!