I have tried to re-check your site, maybe you are misunderstanding our design, the button at the top banner or any section can’t be added link #menu. Because the Arrow(top/bottom) at the right page make all button at the page can’t scroll to section anymore.
I don’t really get your point, I checked the Arrow at the right side and saw it works fine.
Can you explain more about this issues?
And the link #section, we are sorry, we don’t support it on current version.