Sorry if this is in the wrong section but I have been having issues with the NavBar, the categories open up fine on the computer version but when I try opening it on a phone or a smaller display it won't seem to open.
I have checked the default categories and it has been set properly.
Ps. I am new to magento.
Edit: I figured out what went wrong, so I just made a new menu. Thank you.
seems like you are using theme or module for same.
Please ask him for the solution, maybe some setting to enable mobile menu.
As I see there is no mobile menu div there.
there is one more thing
If it will help you then give kudos or mark as solution.