If you are here for this:
Error: You are not allowed to change the price
How to fix:
1) look at the error text files. It will tell you which script is throwing the error.
2) edit that script and search for “password”. Find the webdna password. it will look like this: password=whatevermypasswordis
3) go to the webDNA control panel. ISP Sandbox.
4) locate the sandbox in question and click the small ADMIN button
5) login (generally with sbadmin/sbadmin)
6) preferences “Price Change Password”. Set the password equal to what you found in #2 above.
8) retry your page, it should work now.