help me restore google authenticator codes (RUSH PROJECT)

Hello, so i am having touble using google authenticator as I have lost my old phone and have a new phone. I need help in getting to be able to use it with my old google autheticator account so I can access my important stuff. I have access to the gmail, i just dont have nay of the codes anymore. And the codes that i generated (new codes) are not working on the app.

Thank you.