Deleting Anonymous Post

Hello there.

I posted writeas anonymously around one year ago. I’ve been looking for any information to delete the writing i’ve posted, but the case are not similar to mine. My writing didn’t appear on the Posts page of my account. I assumed that I haven’t logged in when I wrote it.

I still have the link of my anonymous post to prove that the post belongs to me, is there any way to delete it although it doesn’t appear on my posts page? I really don’t want people to access the link. Please help me.