Do you experience problems during downloading?
Check your connection in Status and Interface settings window.
Use Test Server in Config > Servers.
We will probably ask you to do a test using only basic settings.
Do you experience problems during repair or unpacking?
Enable +Debug logging in the Status and Interface settings window and share the relevant parts of the log here using [ code ] sections.
I've just installed sabnzbd on my raspbian OS. I installed unrar but at the end of a download, sabnzbd dosen't unrar anything, I guess I did someting wrong.
Also, I don't see any par2 files in the download directory. I tried to install par2 and yenc with the command sudo apt-get install unrar yenc par2 -y but it doesn't install anything.