I was charged a penalty under Internal Revenue Code section 6698 (a) (1) for filing on April 7 2017. I was not aware that a LLC must file by March 15th. No warning TT

I have been using Turbotax Business since 2004 and every year filed in April.  This is the first that partnerships or LLC's must file in March.  Why would Intuit Turbo Tax not inform the user of the important dates?  I mean if I am using a business tax software that is always being updated, why wouldn't it inform the user of the dates to file what form on what date?