I don't shoot editorial but had some when I was in Seoul during the protest of the president. Ignoring the lateness and potential devalue of it, all of them were rejected and I'm not completely sure why:

QuoteDescription: Protestors left thousands of sticky notes on the police buses during the Seoul protest of Park Geun-hye
Reason: Unacceptable Editorial Caption -- Caption is either missing factual who, what, when and where information, is too vague, contains inaccuracies or is not relevant to the subject matter.

Do I have to actually mention the date - it's in the photo exif? Most of the photos are of crowd/etc. but there was even one of a statue, with nobody in it

QuoteDescription: A statue representing President Park Geun-hye during the protests in Seoul
Reason: Unacceptable Editorial Caption -- Caption is either missing factual who, what, when and where information, is too vague, contains inaccuracies or is not relevant to the subject matter.

You have to use the same format for description as on SS.

https://www.shutterstock.com/contributorsupport/articles/kbat02/000006663?l=en_US&c=ContributorKB%3AAccepted_content&fs=RelatedArticle

City - Circa Date:

     Los Angeles - Circa March 2016: Earthquake damage leaves a neighborhood in ruins.

I'm amazed you can actually upload anything to Bigstock I haven't been able to for a month