Disappearance of Header on Dutch Homepage

I have created a website for a client who requested it to support two languages: Dutch and Polish. To achieve this, I decided to use your plugin to add multilingual functionality. The primary language of the website is Polish, and the second language is Dutch.

Additionally, I am using other plugins such as Elementor, WooCommerce, Mailchimp, Sucuri Security, ThemeREX, and Yoast SEO.

However, I have encountered an issue on the homepage in the Dutch version. The header is not displayed on desktops, although it appears correctly on mobile devices. In the Polish version, the header is displayed correctly on every subpage, and in the Dutch version, it works on all subpages except for the homepage.

Here is the link to the website: https://beautylaparis.nl/

I kindly ask for your help in resolving this issue. If you have any additional questions, I am happy to provide further details.

Thank you in advance for your support!

The page I need help with: [log in to see the link]