FtpClient - problems with Wake On Lan

Installed FTPClient 2.12.1 via F-Droid on Android. Created an FTP connection to my NAS. Now when I go to my connection tab and click on the new connection after my NAS went into sleep it does not wake up and my connection fails. I have to go into the submenu for changing the connection parameters and when I confirm them then my NAS wakes up.

Is there something I have to do for WoL to work on preconfigured connections?

Regards.