The Xigncode is an issue that may occur if the update was not properly applied. Please follow the steps below to fix this issue.
1. Download the xmag.xem file linked below.
[Link]

2. Replace the same file in your Black Desert folder.

[File Path]
- 64bit Client File Path: Black Desert\bin64\xc\id\2
- 32bit Client File Path: Black Desert\bin\xc\id\2

If you downloaded or played any games through an unapproved route or source, please delete all related files then try running our client again.

Click the gear wheel icon on top of the chat window, and then click on [Block List] at the bottom left corner of the Chat Settings window.

If you want to unblock, click the character's name and click on the [Delete] button.
If you want to delete all of them, click on the [Delete All] button.