Having the exact same issue. Out of nowhere, my homepage only is throwing a 404 error. Disconnecting and reconnecting DNS worked yesterday, but then today I got the 404 again and dis/reconnecting did NOT work. I then rolled back the homepage to an earlier version and then it started working but I can’t tell if that was the solution. In the meantime, my other path URLs all work except for my blog which is still throwing a 404 error. Help!!