Hello,
Please add the below CSS codes on Appearance > Customize > Additional CSS to hide it.
.archive .archive-description {
display: none;
}Hope this help.
You also need to Regenerate the thumbnail to make the image size perfect with the theme. Check it here how to do that. https://docs.candidthemes.com/refined-magazine/#WhymyImagesarenotinActuallikethedemo?
And thank you for using our theme.
Please let us know if you need any help regarding the theme use.
Regards
Candid Themes