Top nav. Menu not working on ipad

This seems to be a recent problem only when viewing my site on the ipad, the top menu bar tabs don’t all work. The left hand side tabs up to advanced membership cannot be clicked on, unless you refresh the page after each view. The rest of the menu on the right hand side work fine all the time. Like I have said site works fine on PC,android and mac but not on ipad.
The site is dontlettheforexdriveyouupthewall.com.
All help appreciated, this is really beginning to frustrate me.