Error 404 when trying to edit with Tag div composer

Hi,
First, it needs to be sure that you have set all the theme requirements from our guide https://forum.tagdiv.com/requirements-for-newspaper/, especially this code – https://i.imgur.com/Z9zCgkb.png. If this does not resolve the problem, try using the permalinks on simple/plain; sometimes there are hosts that you need to ask to set the pretty permalinks.