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.

Information on transferring an account between a parent or legal guardian and a child

Information regarding linking a Third Party Platform account to Battle.net and the cooldowns these accounts have

What to do if you receive the error "We Can't Find That Battle.net Account" when logging into Battle.net

Before you can connect to the game servers, you must add a phone number to this account.

How to create an account to play on the Public Test Realms

How to remove your payment methods from your account

How to identify and report suspicious communications received by mail, text, or in-game chat.

Your game account version does not allow this upgrade.

Your game account version does not allow this upgrade.