Can I edit a theme that I bought from Difluir?

Yes you can edit it or ask some one to edit it for you,.
Make sure that you have a backup before edit it.

We only ask that you give some credit to us by link us back in your site or blog.

But if you or anyone else edit the theme, we do not provide support for it anymore.
So if you have any problem, we recommended that you install the theme again.