Rented and sold courier accounts
A verified account is rented out by the week, or sold to someone who could never pass onboarding. The name on the account and the person on the bike stop matching.
How it is stopped. The account is tied to the person who verified, not to the phone or the password. A re-check in your app is a selfie that has to resolve to that person, so the renter fails it. Moving the account to another phone means verifying again from the start, with the document.