Wrong Format Type Downloading

OK, so I've been downloading ROMs to use for my softmodded Wii, and so I need the .wbfs format. First of all, the stupid "wait to finish your download" page keeps popping up when I hit download, despite the fact I am downloading absolutely nothing. Second, when I finally do get it to actually download, it has consistently been downloading the .nkit.iso file format, which only works for the Dolphin emulator, despite me making explicitly sure I selected the .wbfs option under format option on the game download page. If anyone even replies to these anymore, please fix this. I can't even use the games I download anymore now.