Thank you so much for finding the issue with formatting, especially since it affected Foundation.
As far as “seeing” the calculator; It will not show up until you publish on a normal web server/your domain.
So publish your site somewhere to see the final result
Also… there are features (like email the results) that are not showing when you create a free calculator.
Lastly… You need to “activate” the calculator and make it public to be able to use it/view it.
I wrote the dimensional freight calculator myself and found it to be a nice tool to do some very complex (nested formula’s etc.) stuff.