links redirect to the front page on a mobile device

Hello, I am knowledge that my theme is not updated for a while, I havetaken over the support of site on behalf of a client. My issue is, the mobile menu all links redirect to the front page on a mobile device, men when I inspect the code the links are korrekt in the code. Can you please confirm, is this a known error, is there a simple fix? Or is this a update issue? here is my site: https://www.expatsinsaudia.com/