also have you already trying to disable all plugin that not related to the themes first?
if problem still exist, please disable all plugin & themes as well and use default wordpress themes.
are those problem only appear on portfolio or post / page also have the same issues?
we are believe that this issues is not themes related issues, and most of the time other author will not giving any support for issues that not related to their themes. but we keep helping you to resolve issues you having.