Hi, ok, it is because you have two sections defined and one section is sitting on top of the social media buttons, so they never get the hover event triggered. What you need to do, is give each section a class name, some relative positioning and a z-index for each of the two sections, for example, the section that contains your nav links:
I named that "navbar section" this is the section that was overlaying your links, so I want to give this section relative positioning and a z-index 90:
Then I want to select the section that contains the Social Media Links give it a class name, i called it "social media links" in the example, and give that also relative positioning, and a z-index of 100.
Once you update that, then save your changes and publish and check out if the buttons hover and are linked ok. try checking that, and let us know.