Unpublish a game of someone else

[Mr.mush]

Hello i just recently made a game for someone that got published on the persons account and i was wondering if there is a way to unpublish it.
I want to unpublish it because he removed me from the credits.
I tried to contact the person but i am not getting any response.

[ZeroX4]

1 - close gdevelop
2 - open project json file in some text editor
3 - remove this whole line

4 - save changes
5 - open your project normally and try to publish it for yourself