FTP/FTPS error on none default port

[tobias-carlbom]

Hi,

Thanks for this plugin! It seems that there is an issue when the FTP/FTPS server runs on a none standard port (not port 21).

The Test connection works fine though.

If i change the FTP server port (on my synology nas in my case) to port 21, this plugin connects and saves the config file just fine :)