I have received a domain name renewal payment notification by email, but the renewal payment deadline has passed. What should I do?

In case the Owner/Registrar wishes to re-assign after cancellation, the renewal fee will need to paid as well as an additional fee of €10 within a period of ten (10) working days (Annex I, article 4(j)) from the date of expiry of the domain name.

Otherwise, the domain name will become available for a new registration.

The procedure that must be followed can be found here.