Hi Arnold-
Thanks for reaching out, and thanks for choosing the Grid One WordPress Theme.
It looks like you’re currently using the Footnotes Plugin, which has a solid installation base at 6000+ active users and a 4.5-star rating. The only other footnotes plugin I could find with a comparable installation base and rating is the Easy Footnotes plugin.
Both plugins utilize Shortcodes, which is what I think you’re describing when you say “reference container.” Please correct me if I’m wrong about that. Beyond those I don’t really have many better recommendations, although if you have a specific example of a page that has missing footnotes we might be able to take a look and troubleshoot.
As for styling your Blockquotes, that can be easily accomplished with a little Custom CSS. Navigate to Customize > Advanced > Custom JS & CSS and paste this code into your Custom Theme CSS:
blockquote, blockquote p {
font-size: unset !important;
border-left: 0px !important;
}
This code will make your blockquotes’ font size remain the same as normal text, as well as eliminate the black vertical bar on the left side, while preserving the extra margin.