WP-Table Reloaded Headers not displaying correctly

I update an existing spreadsheet with new information every month and have been doing so for the last year or so with no problem. For some reason, when I updated the spreadsheet this month it cleared out all of my settings, particularly the one that creates the column headers from the first row in the spreadsheet. No matter what I do, it will not save my preferences– therefore, I have no headers on my table. Is there a line of code I could insert into the custom area to create headers from the first row of my table to override my glitching spreadsheet? I know a fair amount of code, but I’m no expert by any means. Thanks!

http://ww.wp.xz.cn/plugins/wp-table-reloaded/