Make sure you use “Latest Posts” as your homepage display. To check, you can follow the tutorial here.
Switch between Default blog layout and List layout
- Go to Appearance > Customize > Blog layout.
- Choose between default & list layout.
- Publish.
Blog Display Setting
- Go to Appearance > Customize.
- Go to Theme Settings > Content Archives.
- Follow this setting :
- Save / Publish.
If your images aren’t displaying the correct sizes, run Regenerate Thumbnails plugin.