How to block communication from another player in Diablo III.
Player reports they had heroes they use to play in Diablo III and they're now missing.
How to report a bug in Diablo III
It is not possible to merge the progress of two or more games into one.
This article explains the process of speaking to a Game Master (GM).
How to obtain error logs for Blizzard games
These errors can be caused by temporary server issues in a specific region.