Google Ad Manager Implementaion (app is already in play store)

I already have an app in the play store but I see below given screen in my Kodular account. How do I get approval?

Please search the forum before creating a topic, especially for a question that has already been answered.

update and republish

Searched it, may be I missed a post. Anyways, no issues. I will try to search it again

have you implemented it?