Navbar Layout changes between desktop and tablet

Hi There, new user to webflow. I have a slight issue with the navbar. With desktop layout it’s fine, but when I transition to tablet or mobile, it disappears, or if i force show it, the individual buttons are totally out of order, and I cannot change the size without it affecting desktop layout.

here’s the link to what I’m working on so far : Webflow - Greenscapes

Appreciate any help you can give me !