Type on your Mac from your iPhone — in any language your phone can type, as you type it.
Mini Keyboard is two apps: one on your iPhone, and a small menu-bar app on your Mac. You need both, and both devices must be on the same Wi-Fi network.
macOS lists permission to send key presses under System Settings → Privacy & Security → Accessibility, even though sending key presses is all this app does. Apple groups several different permissions in that one place, which is confusing but expected.
Mini Keyboard never reads your screen and never reads what you type. It only sends the keys and pointer movements you make on your phone.
If you have updated or reinstalled the app, macOS may be holding an entry for the older copy. Select Mini Keyboard in the Accessibility list, remove it with the – button, then add it again with + and switch it on.
Open the Mac app's menu-bar popover and scan the QR code again. If you tapped New code on the Mac, every previously paired phone must re-scan.
No. Mini Keyboard works only on your local Wi-Fi network, by design. Nothing you type is sent to any server, and there is no account.
What you type goes from your iPhone to your Mac over your own network, encrypted, and nowhere else. There is no account and no cloud sync. Full details in the privacy policy.
Email dark2torch@gmail.com and include your iPhone model, your macOS version, and what you saw. If pairing is the problem, say whether your Mac appears in the iPhone's list at all — that one detail narrows it down immediately.