i am not functions.php

Is mod_rewrite running on the server? What custom permalink structure are you using? Have you reviewed Using_Permalinks?

Post name IS a custom permalink structure. What about the other questions I asked?

Post name IS a custom permalink structure. What about the other questions I asked?

Do please read what is posted and try to answer the questions asked.

You also need to check (just check – not change) the urls entered in settings -> General which were defined by you when you installed WordPress . index.php should not be needed on a Linux server.

Stop bumping! If you want one-to-one support, perhaps you need to consider hiring someone.