Judgment of the Court (Fifth Chamber) of 8 June 2023.#OZ v Lyoness Europe AG.#Request for a preliminary ruling from the Tribunalul Olt.#Reference for a preliminary ruling – Consumer protection – Directive 93/13/EEC – Unfair terms in consumer contracts – Article 2(b) – Definition of ‘consumer’ – Contract for membership of a loyalty scheme enabling certain financial benefits to be obtained when purchasing goods and services from third-party traders.#Case C-455/21.