Support

Usual reply time: a few days

Email maksutiiomer@gmail.com or open an issue on GitHub.

What to include in a report

The more of this you can give, the faster it gets fixed — and please leave out anything sensitive.

Your device and OS version, and the Shellter version from Settings.
The protocol: SSH, SFTP, FTPS or plain FTP.
What you did, what you expected, and what happened instead.
The exact error text, if there was one. Please redact hostnames you would rather not share.

Never send a password, a private key or a passphrase. No support request will ever need one, and nobody working on Shellter will ask you for one.

Common problems

It says the host key changed, and I did not change anything.

Shellter stops the connection before sending your password and shows both fingerprints: the one pinned on your device and the one the server offered. Do not continue until you know why it changed.

A key legitimately changes when a server is rebuilt, migrated, or reissued. Confirm the new fingerprint by another route — log in from a machine you trust and run ssh-keygen -lf /etc/ssh/ssh_host_ed25519_key.pub — and only choose Trust new key if it matches. If it does not, someone may be intercepting the connection.

I cannot find a file I downloaded.

Downloads go to a Downloads folder inside Shellter’s documents area. On iOS, open the Files app and look under On My iPhone → Shellter → Downloads. On Android, open your file manager and look under the app’s files. A download never overwrites an existing file — it is saved as name (1).txt instead.

The connection times out on my home or office network.

On iOS, reaching a server on your local network needs the local network permission. If you dismissed the prompt, turn it back on in Settings → Shellter → Local Network. Otherwise check that you are on the same network as the server and that the port is right — 22 for SSH and SFTP, 21 for FTP.

My private key will not load.

Paste the full PEM, including the -----BEGIN OPENSSH PRIVATE KEY----- and -----END …----- lines. If the key is encrypted, put its passphrase in the passphrase field rather than the password field. Keys in PuTTY’s .ppk format need converting to OpenSSH format first.

I moved to a new phone and my connections are gone.

That is deliberate. Shellter opts out of cloud backup and device-to-device transfer, and stores credentials so that they cannot be restored onto another device. Nothing was lost from the old phone; the new one starts empty and you enter your connections again.

Privacy

Shellter collects nothing, so there is no account to recover and no data for you to request or delete. The privacy policy sets out exactly what the app stores on your device.