Brief.
We have fixed the 'js/ordering.js' script after release 3.1 has been issued.
 
Description.
There was a problem with shipping and taxes calculation when changing a state and checking the box 'If the delivery details are the same as above tick here ...'.
 
Solution.
Please, download an updated version of the file from here:
http://www.viart.com/downloads/ordering-3.1.zip
Then extract the 'ordering.js' file into the folder 'js' of your shop replacing an existing one.
Don't forget to make a backup copy of the replaced files in case something goes wrong.