If something is not working, or there is a habit from Explorer the app has not learned yet, we would genuinely like to hear about it. Parity is the whole point of this app, so a missing one is a bug rather than a request.
We usually reply within two business days. When reporting a problem it helps to include your Mac model, your macOS version, and what you were doing when it happened — particularly which folder, and whether it was on an external or network volume.
It is sandboxed, so it starts with access to nothing. Choose Grant Access to Folder… in the File menu and pick your home folder; a grant covers everything inside it and is remembered between launches. Downloads, Pictures, Music and Movies work without a grant because macOS opens those to every app.
Not from Amico. Mac App Store apps are sandboxed, and the sandbox does not let any of them look inside the Trash. Move to Trash and Undo work as normal; to look inside the Trash or empty it, use Finder.
Each folder keeps its own sort order, and a folder you have never sorted opens by name. To change it in any view, choose View › Sort by; in Details you can also click a column header. Either way the folder remembers it.
For working with files, yes. The desktop, the Dock, the Open and Save panels, and “Show in Finder” from other apps are part of macOS and always open Finder.
Not inside the app yet. Connect to Server (⌘K) mounts SMB, AFP and NFS shares through macOS, and they then work like any other drive.
Help › Keyboard Shortcuts, or ⌘/ — it lists every command in the app, and for the handful with no shortcut it tells you which menu they live in. The list is generated from the app itself, so it cannot drift out of date.
⌘U. Then F5 copies the selection to the other pane and F6 moves it. ⌘⇧U switches which pane is active; the sidebar and the path bar follow whichever one that is.
⌘Z. Undo covers renames, moves, copies and deletes. Deleting always means the Trash, so anything removed is recoverable there as well — the one exception is Delete Permanently, which always asks first and says plainly that there is no way back.
Not in this version. You can browse an archive, preview files in it and copy them out, but not rename, delete or paste into one. Use Expand to unpack it, change what you need, then Compress to make a new archive.
A copy between two volumes genuinely moves the bytes, so it takes as long as the slower disk allows; there is a progress sheet with a working Cancel. A copy within one APFS volume is a clone: it finishes instantly and takes no extra space, which is why the two feel so different.
The most useful bug report says what you expected, what happened instead, and the smallest sequence that causes it. If it involves a file that misbehaves, its kind and rough size help; we do not need the file itself, and please do not send us anything confidential.