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 got a fresh install of Sabnzbd on Debian 9.0 (and have tried reinstalling mutliple times) and each time I get the same result.
I install it, configure the newsgroup provider (which I know is OK) and attempt to add a file to download and it just sits there. I do not get any errors in the logs, it just sits at 0% as seen below;
I have tried the host with and without SSL. I have also tried the newsgroup provider with/without SSL too and different ports.