Hi Jakup,
Thanks for reaching out! Can you please clarify what’s not working? Is the menu not opening when the icon is clicked?
Also, we recently pushed an update for the theme addressing some styling issues for the mobile menu. This update should be available within 24 hours. Hopefully the update resolves this mobile issue.
Regarding the customization of the mobile navigation, this is controlled by the Navigation Block settings, and there are currently minimal options for customizing the menu. Additionally, the Navigation Block is a core WordPress block (not under our development). However, there are updates on the horizon for the Navigation Block that will include more options for mobile menu customization. You can learn more about these updates here, https://github.com/WordPress/gutenberg/issues/39142
Additionally, can provide a link to your site for our review if this issue is not resolved?
Thanks!