How to renew expiring secure elements used in fiscal devices at Serbia's eTax portal?

Taxpayers in Serbia receive automated notifications via the eTax portal and Electronic Fiscal Services (ESF) when their secure elements near expiration, starting 90 days before the expiry date. They can manage expiring elements through options such as "Renew," "Postpone," or "Decline," with the ability to renew or defer all expiring elements at once.