Hello Sam,
Thank you for contacting us regarding your inquiry about the sticky header settings in your theme.
Please note that the header was created using Elementor. Consequently, you should disable the header builder via the Theme Options, as settings configured there will not be effective. Only the settings adjusted through the Elementor header builder will be operational.
Please read about sticky header here – https://www.8theme.com/documentation/xstore/xstore-builders/new-xstore-header-builder-with-elementor/
Should you require any further assistance, please do not hesitate to reach out.
Best Regards,
8Theme’s Team