how to edit a family tree whose manager is inactive

I have contacted a distant relative of mine who used to manage this tree: https://www.geni.com/family-tree/index/6000000012238227854
He has not been active for several years, he did not even remember which site he uploaded his tree, and he gave up on family history research entirely (as he admitted it to me in an email). I would like to edit some of the profiles on this tree as I have ancestors there and I have new information about them. How can I get access to that, can a curator help me, please?

This is my great-great-grandfather on this tree: Imre Battlay Dr. I would like to gain access to him, to his wife and their ancestors and all of those people are ancestors of mine and I have some new information about some of them.

Thank you for helping me!