Contact
RadiMeter is in beta, and the most useful thing you can send is a result that looks wrong. Tell us which test, what you entered and what you expected — that is enough to reproduce it.
Requests about your data under the Privacy policy reach us the same way; say so in the message and we will treat it as such.
By email
This reaches us directly and is the most reliable route. Include the test, what you entered and what you expected.