@jerasquin I can't see how this can be done. Since you cannot prove that you are the person in the old account (i.e. having no codes, as you put it and having lost the authenticator app), there doesn't appear to be a way to legitimately delete the account. I say this because I'm essentially in the same situation having a former account that is impossible for me to access for similar reasons to your own. So, I simply created a new account and left the former behind. I don't see it as a problem.

@ej16 It's the path you'd goto in Windows Explorer/File Explorer (you'd replace yourusername with your username). It's the folder where your pinned icon shortcuts are stored.