Why my account was locked?

This is primarily a user-to-user support forum; other Apple users like you. Contact Apple Support. See instructions in: If you see a message that says 'Your account has been disabled in the App Store and iTunes' - Apple Support

You will need to contact Apple Support -- that is the only way to resolve the issue.

Click on "contact Apple Support" shown below:

If you see a message that says "Your account has been disabled in the App Store and iTunes," there might be a problem with the payment method that you have on file.

When you see the message, don't try to edit any of your account information. Instead, contact Apple Support for help.