This is a guide to the case where the item on the business registration card is a different item than the PC room.

Troubleshooting steps for what to do if you get this error when trying to make a purchase.

There's a problem with the connection to the Blizzard servers.

some players Can't Update Diablo IV: Vessel of Hatred Deluxe to Ultimate on PC Using Real Money

Information to resolve issues of latency and disconnection for Diablo IV on your game console.

Troubleshooting information for installation or patch problems with Diablo IV on console

Information regarding Steam orders for Diablo IV that have not yet been delivered successfully

Troubleshooting the Diablo IV Error "1703" on PS

Troubleshooting Diablo IV Error Code 1016

This is about the refund of the classic game (Diablo II, Diablo II: Lord of Destruction) that Blizzard released in the past.