on mobile view please use hte Menus button to access the menu. 2 options appear, one titled Shop and the other Menu. Please access the Menu option. The first and last link say PRODUCTS and ABOUT US. Both have a drop down option to see additional links. Please press the down arrow link. The text that now appears is black and should be white against the blue background. When you are in the SHOP menu the links work properly and white colored text appears when using the drop down link ot see additional page links.
Hope this helps Thanks