Tell us what the numbers did.

The most useful message you can send is one that says a calculator is wrong, and shows what you entered. The second most useful is one that names a tool that should exist and does not.

Corrections

Include the numbers you entered and the figure you expected. Both go straight into the fix.

Requests

Say which craft it is for. Requests that come up more than once get built first.

Worksheets

Orders and downloads are handled by the shop that sold them — start there, then come here if it stalls.