Parental controls may prevent purchases on your account.
Eligibility and limitations to consider when a free character transfer is available
The WoW Token allows players to purchase World of Warcraft game time for real money and then sell that game time for gold on the in-game auction house.
Information on error BLZ51900011
This error may be due to a server problem.
Troubleshooting chat problems in World of Warcraft
List of limitations to buying a WoW Token