When I align my primary nav to left, it has a transparent background, but when I align center or to the right; it takes on a white background. I have a merged header and have checked all my settings against the two other sites I have set up the same way, but I cannot figure out what’s going on.
If you can create a temporary user account then you can post them here as no one but us admin can see the URL which makes the login useless to anyone else.