Minimum and recommended system requirements for Call of Duty: Black Ops 4
Information on error BLZBNTBNU00000002
The Blizzard Battle.net Deskop App can't be launched due to an operating system error.
Steps to help you find a missing ticket.
Troubleshooting steps for missing notifications on the Blizzard Battle.net Mobile App
Unsupported operating system error.
The Blizzard End User License Agreement explains what you may and may not do with a Blizzard account. This article highlights a few passages from the EULA that are most relevant to this policy.
What to do if the icon for Call of Duty: Black Ops 4 is not visible on the left side of the app, hence no download option exists.
What to do if you are short on Balance to complete a purchase
Describes how to repair the Mac shared folder