Hey there.
This is a relatively easy fix. (unfortunately I am away fro my work computer so I can’t issue an official patch, but this will hold you until then.
In the file wp-content/plugins/wp-old-post-date=remover/css/OPDRstyle.css you need to add a new div class to the list:
.cb-date.cb-byline-element,
So, just at the beginning of that file, add that div class. That should take care of you. So, the full file will look like this:
/* Remove meta from post */
.cb-date.cb-byline-element, h6.edate, li.enigma_post_date, .entry-date, post-date, span.post-date, span.date, .entry-time, span.post_date, span.post_date_intro, span.posted-on, span.meta-date {
display:none !important;
}
Once I get back to my main development computer, I’ll be able to issue a patch that fixes it for you long-term. That will be Saturday at the earliest.