Fillable forms that won't save data properly

I created a fillable PDF with check boxes, drop down menus, calculations etc. Everything is finally working just the way I intended except that it won't save properly. When you open the file and fill out the data - if you try to save it the check boxes are unchecked, or other that were not checked are checked. Or data is sparadically missing. 

Could someone please help me figure out how to get this form to a point that someone can fill it out a save a copy without disrupting the data on the form? 

This happens when I open it in Adobe Acrobat Pro DC, DC and Reader. 

I tried File -> Save as Other -> Reader Extended PDF ->  Enable More Tools which didn't help.