You'd modify the link and browse for the linked file of the same name file on your local file system.
OpenOffice can take a while to open the Excel version of the financial accounts file. (Which is why the Open Document Spreadsheet version was created).
Could you email us on email@example.com
using the email address you used for the original purchase? (so I can locate you in the system). I'll create a new version using a slightly different method I'm experimenting with and you can give that one a try.