For non-supported languages, the Blizzard Data file is available in English.

What to do if emails you receive from Blizzard are not in your own language

What to do if you receive "Internal Error" when you claim a Character Boost

What to do when you get an Internal Error attempting to access the Shop

Questions about the Blizzard Internship program

What to do if you can't create a new crafting order

Information on this error when looting items received from fishing

Troubleshooting steps for the BLZBNTGFT00000001 error.

How to resolve an Internal Mail Error when looting mail.

Information on the BLZBNTGFT00000117 error