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.
Switching to Python 3 would require a major re-write of the code, almost having to start from scratch.
There will be another Python 2 maintenance release in August/September.
If you like our support, check our special newsserver deal or donate at: https://sabnzbd.org/donate