If you want to unlink an AMC (Amazon Marketing Cloud) instance from an account in Adbrew, follow the steps below:
Steps to unlink an AMC instance:
Go to the Account Manager page by clicking on the Organization button in the top-right corner of the platform.
Find the account for which you want to unlink the AMC instance and click on the Edit (pencil icon) next to the account name.
Select the Unlink AMC Instance option.
Click on Update Account to save the changes.