Cookies and device storage
Updated: 10 October 2026
Necessary storage
Your browser stores sign-in state, language, recent account data, invitation attribution and request keys to reduce duplicate transactions. The server fixes account currency; changing device storage does not change the account market.
App and cache
A service worker can cache interface files. Private APIs are not cached in it. Signing out or clearing site data may require signing in again. Removing an uncertain request key does not cancel a transaction; check its history.
Measurement and notifications
Campaign and device information may support measurement according to configuration and applicable law. Push requires permission. Browser settings control permissions and site data; blocking necessary storage can affect sign-in or purchase confirmation.