Some sites sell "GTA V accounts" instead of keys. They create an account, activate a cheap key, and sell you the login info. The original owner can reclaim the account via email recovery at any time. You lose your progress and your money.
This comprehensive guide covers everything you need to know about acquiring and using a GTA V activation key safely. Gta v activation key
When you purchase the game, whether physically on a DVD or digitally via a storefront, you are essentially buying the right to a single, unique key. Some sites sell "GTA V accounts" instead of keys