Contact
Support, a translation that reads wrong, a question about a purchase. Messages go straight to the support mailbox and a person replies, in English, usually within two business days.
Sent. Thanks, it reached the mailbox. A reply comes to the address you gave.
That didn't go through.
For a crash or a bug, the app's About window has Save Diagnostics…; attach that file if you can. Security reports: see security.txt.