Sorting by date error

Hello,
I am trying to set the sorting by document publication date, but the sorting remains by field name.

I read the documentation and it seems to me that the shortcode is correct. I reproduce it here.

[wpdm_all_packages thumb=1 items_per_page="5" categories="review-press" jstable=1 order_by="date" order="desc" cols="title,file_count,download_count|publish_date|download_link" colheads="Title|Upload date |Download::155px"]

Can you help me figure out how to fix it?

Thank you

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