Hi there,
Before I continue, do you wish to import the Agency too? It’s because the Ethos demo is already imported but it doesn’t contains posts or pages since it’s standard demo. And the standard demo is simply a placeholder and you will have to finish it by adding your pages and posts manually. Again do you wish to import the Agency demo overwriting the current Ethos demo?
Your Ethos demo contains invalid category IDs. Please go to Theme Options > Ethos > BLOG OPTIONS > CATEGORY IDS
and input the valid category IDs which you can find under Admin > Posts > Categories
. Please note that this is a filterable index, a special feature of ethos. If you wish to display a normal blog, then turn off the Filterable Index.
As for post carousel and post slider, they are set as featured in your Theme Options. With that, you will have to edit each of your post and find the Ethos Post Settings
section and toggle on the Post slider and carousel options. This needs to be set manually since your Theme Options settings is set to display featured items. And features post items are manually selected by you.
Thanks!