This translates as:
I received my Blackshark V2 x activation code in my mail, but when I enter the application and try the code, the code keeps giving an error, I want to get a new code

Hello Giroyna22,

I’m here to help. Please PM me your headset serial number and the screenshot from the error message so I can check and provide other workarounds. Save the shareable files via any online drive account listed here. Also, let’s continue communicating in English to avoid misunderstandings. All the best!

*Thread locked to curb the conversation to PMs.