having trouble with my list category posts plugin

I’m using the list-category-posts on this page: http://www.goldcoastchamber.com/member-directory/ to pull in the links to all the posts under the member-directory category. That part is working, but for some reason it’s not putting them in alphabetical ascending order, even though I used that argument, as you can see here:

[catlist name=member-directory, orderby=title, order=ASC, numberposts=-1]

please advise why this is not working. thanks!

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