Homepage Problem

I set up the site with a static front page via Settings > Reading. I created a “Home” page and set that to Front Page, and the Posts Page is set to “Blog.”

I went into the “Home” page and set the template “Homepage” and in the text box I added the following:

However, my homepage isn’t working so well. 

This is all that shows up on the bottom of the page. I have tons of posts, but for whatever it’s only showing two pages. When I click the next button, it’s the same posts on that page as well. There should only be 4 posts showing, but for some reason there are 10 showing.

I’ve clearly set something up wrong, but I don’t know what I’ve done.

So to sum this part up:

1. Page numbers lead to nowhere. Missing tons of pages.

2. Both pages show the same posts.

3. Homepage showing 10 posts instead of 4.

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Next issue:

I’m running this in a child theme, so the base files are located in “oblivion” and the child theme files are located in “oblivion-child.”

At one point, I wanted to make a change in the header.php, but for some reason, whenever I upload the header.php file (unchanged) to oblivion-child folder, it has no background anymore. I don’t know why that is.

In general, it shows a background, however even though I have a background color set in the Oblivion settings, it’s still showing me this:

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Edit: Fixed this particular issue by installing WooCommerce (the above issues still stand).

Any help would be so appreciated. 🙂

P.S. I have tried disabling all of my plugins, that resulted in nothing.