Support
Most answers are in the guide and the FAQ. For anything else, such as a bug, an idea or a question about your license, write below. Messages go straight to Anthony Laibe, who makes Kestrel, and the answer comes by email.
In Kestrel itself, Help › Send Feedback… sends the same message with your Kestrel and macOS versions, which helps with a bug.
Thanks, it’s sent.
The answer will come to the address you gave.