I'm using Armbian 22.08.2 Jammy. I did a clean install, then installed Apache2, php and MariaDB and now seem to have functioning ftp.
I did a search for any ftp config files but haven't found anything useful yet.
I'm running Armbian on an Orange PI zero and I want to change the default ftp port because I have another device on my network that uses ftp and I want to forward the port.
FTP seems switched on by default, I didn't install it so I don't know which ftp program it is.