How to report a bug in Diablo III
This article explains the process of speaking to a Game Master (GM).
How to update your BattleTag.
Information about common payment issues and troubleshooting steps
These errors can be caused by temporary server issues in a specific region.
Troubleshooting steps for error "Game Initialization Failed" when launching a game
Troubleshooting for unresponsive mouse cursor issues in Diablo III
Information on how to restore your Diablo III character