Seeing as this is still going I can share what we as players know about the PvP penalty system.
- Your team must report you as not participating. It is not automatic. This means your TEAM feels you are not playing the PvP match as a team member.
- Blizzard checks the logs - if 50% of your games over a time period have ZERO healing or damage then that results in a penalty for non-participation.
- Two weeks seems to be the starting penalty for non-participation and will scale up for future infractions. Next time will be longer.
- If you wish to participate in PvP matches you need to play with your team and actually be dealing damage to other players, or healing your team mates.
Work WITH your team on the PvP objectives if you want to avoid penalties. You can’t just go off on your own, as you now know.
Hopefully that answers any questions about why you were penalized, how the system works (from what we currently know), and how to avoid it in the future.