Since QuickBooks online accountant is a free program, there’s no subscription to cancel. But since you are a ProAdvisor, You can click the proadvisor tab to access anything that has a fee to it.
I contacted my support team to ask about removing an account that had the free program that I use as a sample file. They said there’s no way to delete a QuickBooks online accountant file because it has no fee. If you do not want to not see you anymore, I was told to create a new email address that I wasn’t going to use and then attach that to it as the email of record. That will remove it off of the list for you and it will just stay out in cyberspace Attached to that one time email.. I was told that was the only way to make it go away.