Im using the Unero Theme, and this theme have a lot of templates for header and footer. It has 5 templates for each but only work the first and second template. When you select the third template the theme select a random template from first or second.
I’ll tag in the author of that theme for you @ArrowHiTech
Also, you can check out their support information here - https://themeforest.net/item/unero-minimalist-magento-2-theme/20610432/support
Can you submit a ticket to https://arrowhitech.ticksy.com/ and our support team will very happy to support you?
Thank you very much!