Hi Ben,
It’s not included unfortunately – please refer to the support policy. It (https://themeforest.net/page/item_support_policy#whats-included-item-support) clearly says:
Item customization
Item support does not include services to modify or extend the item beyond the original features, style and functionality described on the item page. For customization services that will help you tailor the item to your specific requirements, we recommend contacting the author to see if they privately offer paid customisation services or checking out the great service providers on Envato Studio.
Both things you mention are not features that are included so that’s why we can’t look into it.