Hello, Monark,
Thank you for reaching out to us.
To display your desired menu, please ensure that you have selected the appropriate menu (created under Appearance > Menus) within the Header Builder settings. You can do this by navigating to Header Builder > Menu Settings. For your reference, please see the following screenshot: https://prnt.sc/eqoFbd2ktbxz
Should you need further assistance, feel free to provide temporary admin access via the Private Content area so we can take a closer look.
Warm Regards,
The 8Theme Team