In my version, it’s the same place you would have installed your demo(s) for testing.
It used to be
main theme panel
import predefined styles > go to import > “Factory Restore” …
might have moved in your version, but it’s on one of the content import screens.
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actually ….
In the latest version it now has the demo options
https://forum.tagdiv.com/newsmag-installing-demos/
Uninstall a demo
If you decide to change the demo or uninstall it, the import system will make sure that you website is clean: no additional sidebars, menus or content. It will leave you website just like it was before you installed the demo.
To uninstall a demo go to Newsmag > Install demos section. Click on the Uninstall button.
For the moment the theme does not have Restore to Default option but we plan to add one in future updates. Meanwhile yu can try the method indicated in this topic: https://forum.tagdiv.com/topic/change-style-of-multiple-posts-at-once/ It’s for Newspaper theme but should work on Newsmag too.
Thanks!
Also, I think we used this once, but not recently….
a) install the wp-optimize plugin
b) switch to default theme
c) delete old theme folder via FTP
d) in wp-optimize, optimize your DB, and delete ALL transient data
e) use the WordPress database reset plugin:
https://wordpress.org/plugins/wordpress-database-reset/
[ read the docs for above plugin before use !!!!!! ]
you should then be able to reinstall the theme and there should not be any pre-existing data from the first theme setup …
this is presuming you have a blank slate test website, and presuming you have a full backup of your data and mysql file for safe keeping.