Panels modules got rid of all my pages
Panels everywhere is like it says, a way to use Panels all over your site. This means that whats normally outputted by page.tpl.php will now be run through a Panel.

Enable the site template (if not already done) here: /admin/structure/pages
Edit the site template and add the page elements as you want your site to be built. Eg. add the site header, then the page title, page content etc.

There is also a setting to create a sample site template variant for you here /admin/structure/panels/settings/everywhere.