Contact
Write to support@pyxl.pro about a mistake, a test that misbehaves or anything else on the site.
Where to write
Email reaches the people who maintain the site: support@pyxl.pro. There is no contact form, so nothing you send is stored on this site.
Before you write
Each figure links the source it comes from and shows the day that source was checked, so opening it often settles a question. If the source has changed since that day, tell us which edition or version you read, and the page will be compared with it.
Reporting a mistake
Name the page, the result or figure you believe is wrong, your browser and device, and, if you can, a source that gives the right value. A link to a maker's support page or a published standard is the fastest way to a fix.
Each report is compared with its source; when it holds up, the data, the page and its date change at the same time.
Replies
Replies come in English, usually within a few working days. A report about a wrong figure or a broken test is answered first.