The dropdown menus do not work to get the remote codes for specific TV brands. I see this as a topic in the forums marked "SOLVED!" It is not solved. Those dropdowns are stil blank all that is listed is "Major Brands" and "Other Brands" but no brands are listed under these, and these are not links. I'm guessing that maybe isn't configured for Safari or a Mac, but maybe it's something else.
Nonetheless, you should be able to download a .pdf file with instructions and not have to deal with these menus which have been giving consumers problems since 2008.