You can try by Setting – General and change Blog Post number to 4 and please try it. But in case of widget section read more, you need exact link to put there.

Regards

Hello bregtv,
You can put your blog page link there. If you have your blog page, put that link there. It will take visitors to the blog page.

Thank you

Dear stsorrell,
Thank you so much for using our theme Mercantile. To unstick header, this feature is available only on the premium version of this theme. So we recommend you to check the premium version for added features. If you need it on this free version, you need to customize the theme codes. You can check custom.js file and customize the sticker header code as your need.
Please try once and let us know the results.

Regards

Hello filipi,
Please find the dummy data on the respected theme documentation. For education base, please check docs here. Check the youtuble link for more info.

Regards

Thank you so much for helping us in this things.

Hello,
Please add the below css codes on Appearance > Customize > Additional CSS. Hope this helps.

.image-slider-wrapper .banner-title {
    color: #000 !important;
}
.image-slider-caption.slideInUp2 {
    color: #000 !important;
}

Please change the color code to your required color.

Regards

Thank You

We are worried about why options to add an image for contact section background is not working.
Now, if you want to change the image via child theme, you need to copy widget to the child theme and you need to edit some line of codes.
You must know some codes of parent and child theme. In child theme, ge_stylesheet_directlry_uri instead of get_template_directory_uri. So first check codes works.
So, we recommend you to check options meticulously instead of working with codes.
Let us know