Can't get calculation widget to work

Hi, I've used the calculation widget lots of times before, but I can't get it to work today.  It doesn't even seem to be working on your example form that is referenced in the documentation:  https://form.jotform.com/63404144341950

We're also experiencing this issue with all of our forms.

There was an error on our end that caused calculations to fail.  Please accept our sincerest apologies.  This is now fixed and calculations should be working once again.  If the issues persists edit the form and save it.  That will remove the bug.