Why Does It Tell Me 'No More Encodings' When I Try Exporting

Great, so I went to verify the mp3 extension, and when I tried to it said it couldn’t because the time and date settings on my computer were wrong. Complete BS, but I went into the settings and changed them to what I think the program thinks it should be anyway. Now I can’t get back to the authentication stage, whenever I try to reopen the installer instead it just stops, and I can’t find the mp3 extension using the search function on my computer.