Tady mas podminky pouzivani marketu. Predpokladam, ze jsi tedy na steamu nekupoval nic v rozmezi pred 30ti dny a jednim rokem.

No Purchase Older Than 30 Days
Your account must have a successful purchase older than 30 days, but not older than a year in order to access the Community Market. The purchase of wallet funds, games, DLCs and software meet this requirement. Retail CD key activation and gift purchases do not satisfy this requirement.

Navic retail CDkey se jako nakup na steamu nepovazuje, takze ti to zrejme ani za tech 30 dni nebude fungovat.