Leaving project not managed by myself

I have an Gitlab account where I had been part of a project I want to leave , as I am no more a part of it. I am not an administrator of the project and the administrator somehow does not respond to me anymore , due to which I need to leave it on my own. Initially there was no option for leaving the project on my own and I find that in recent versions of Gitlab this option is supposedly added. But still I can not leave the project , despite trying for months. Please help me out. I no more want to see it in my dashboard or have access to it.
Bahata Ansumali.