If you want to change Discord accounts or are selling your copy, head over to https://cybersole.io/dashboard/. Login to the Discord you have binded to your Cyber key if prompted then you should see something like this:
To unbind, which will remove you from having any access to the Discord and Dashboard, click the "Unbind License" button in the top right:
Only do this if you need to! Never unbind if you don't need to. This is how many people steal keys.