Ring Door Bell Second Owner

Hi allIm New to ring I reasently was given a ring door bell from a very close mate that has just passed away. Im not sure if this is possible but there no access to his account that the door ball is regisited to.No way to access his account due to his passing to ask to remove the door ball from his account.His daughter that gifted me the door ball has no access to his account as he has taken all his passwords to his grave. Dont want to post names in main forum but can post the barcodes!