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

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

Information on the BLZBNTBTS00000011 error

Information on the BLZBNTBNA0000000C error

The Battle.net Deskop App can't be launched due to an operating system error.

Information on how to change the registered Battle.net account holder name

Information on submitting supporting documentation

This is a way to check Overwatch products and receive refunds.

You can check the refund policy for Battlecoin through this page.

How to change the name of a Hunter's pet.