Acrobat Form Glitch with calculations [title corrected by mod]

I've been creating basic forms in Acrobat Pro form quite awhile now.  I created a grant application in November, and one page used two columns with a basic sum. I checked it for accuracy, as well as having another coworker proof as well, and all the calcuations work.  Satisfied I uploaded it to our office's webpage.

It has come to my attention that users were finding that their totals were not working.  Perplexed, I went out to our webpage, opened up the document, went through the simple budget columns and noticed that, indeed they were not calculating properly. I downloaded it to my computer, and when I went through it, again they were not calculating.   Taking it a step further, I went to the original form I created and it worked without flaw.

Could there have been an issue in the upload?  I've searched other posts and have found similar questions, but not answers that reflect my query.  I need to rectify this for any future forms that use sums.