Menu Bug

Hi,
I have built a munu and it was fine. But now I am not able to add any more pages. As shown in the attachment. When you hover over the menu you just see white box with no text and the new menu selection doesn’t forward to the next page. I have now removed the pages from the menu for the sake of user experience. They are appearing in the footer section.
The pages that Are not showing on the mene:
I Drive your car
Traveling with children
I want to build a few more pages after this is corrected.
Thank you in advance,
Frank