Contact CalcSite
Write to support@ytscript.app. This is the only contact route for this site; there is no phone number and no postal address.
What to include
If you are reporting a wrong answer, include the page, the numbers you entered, the result the page gave you, and the result you expected. With those four things a report can be checked against the formula in minutes; without them it usually cannot be checked at all.
If you are asking about a calculation in your own situation, note that this site cannot answer that — a page does not know your circumstances, and the people who maintain it are not your advisers.
Privacy requests
There is nothing to request. CalcSite has no accounts and keeps no record of visitors, so there is no stored data about you to access, correct or delete. The privacy page sets out why.
Before you write
Most questions about a calculator are already answered on the page itself. Every page states its formula, the assumptions the formula rests on, worked examples with the numbers shown, and the edge cases where the result stops being meaningful. If a page's answer surprised you, the edge-cases section is the fastest place to find out why.
Reporting a broken page
A page can be wrong in ways that have nothing to do with arithmetic: a control that does nothing when you change it, a result that does not update, a layout that collapses on a narrow screen. For those, include the page address, the browser and device, and what you did immediately before it went wrong. Those three details are usually the whole diagnosis.
Other enquiries
For anything else — advertising, a copyright concern about material on a page, or a question about how the site is built — use the same address and say what it is about in the subject line. Copyright concerns are treated as urgent: say which page and which material, and it will be looked at before anything else in the inbox.
Response times
Every message is read. No reply time is promised — this is a small operation, and saying "within 24 hours" would be a claim the site cannot keep.