This is the whole process, and it takes one tap. Nothing is emailed, nobody has to approve it, and it happens immediately:
Both go immediately and permanently. We keep no copy, no backup row and no archive of them, so there is nothing left to retain and no retention period to state. We cannot restore any of it afterwards — not on request, because it is genuinely gone.
Nothing on our side. On your device the game keeps playing exactly as it did: best score, shards, unlocked skins, trails, maps, missions, settings. That data never left your device in the first place, which is why deleting the account does not touch it. To erase that too, use Settings → Reset progress, or uninstall the app.
Email rld.ranger07@gmail.com from the address you signed in with, or tell us the display name shown on the leaderboard, and we will delete the account and its row for you.