Modification of final submission date for the Public tender, the Date of Their Electronic Opening, and Other Terms of the Call for Tender, within the Framework of the Open Electronic Above-Threshold Tender Procedure of 20.02.2026 for the Award of the Contract Entitled “Multichannel Information and Citizen Service System of the Ministry of National Economy and Finance” (ADAM: 26PROC018520735 2026-02-20 / ADA: Ψ4ΛΨ46ΝΩΑ7 ΚΚΚ), as well as Ex Officio Clarification.