Other players and non-player characters display "Unknown" instead of their name.

他のプレイヤーを通報する方法

Player reports they had heroes they use to play in Diablo III and they're now missing.

How to ignore another player in Diablo II (2000)

Troubleshooting the World of Warcraft Armory site not matching in-game information

Smoldering Ember Wyrm didn't drop in Return to Karazhan

This article explains the process of speaking to a Game Master (GM).

Unable to enter overcrowded WoW Classic realms