If you do not have a decryption key, check the installation instructions for a point of contact.
A BattleTag™ is a player-chosen nickname that identifies your Battle.net account
What to do if you think another person or group of people has targeted a DDoS attack on you
How to troubleshoot account creation issues
Each BattleTag is assigned a numeric ID to create a unique identifier.
A phone number can only be linked to one free game
If your antivirus software detects a virus in a Blizzard game folder, the detection will most likely be a false positive.
Information about the error "There was a problem retrieving items from the store. (Code 396009)."
When a Boku payment does not go through after waiting 24 hours
The code of conduct for Blizzard Entertainment forums