how do i restore my Android device ID

One week ago I had rooted my Android device. But after some days I saw that some apps are searching device ID. But do not accept the ID... "ADRENALINE RACING HYPERCARS"is a game that is trying to get my ID..I thought rooting must be the failure of it. So I've unrooted it again but the game is still showing the same message.. It can't identify device ID. What should I do no now?