Accordion limit to 10?

I carefully created an accordion with 26 items.  When I saved it the last time and display the page...it is cut off at 10 items:   http://celebrationofclay.com/2017-tasks/

Is it a limitation that I can have only 10 items in one accordion??

Thank you.  Pending your answer, I am going to try to create additional accordion items on the same page and see if that will work for me.  I am using the free version.  As a non-profit organization, we can barely afford the hosting of the site.