The think tank of the European Parliament published a briefing (pdf) showing the domestic discriminatory practices in the EU-countries with Covid Certificates. According to the briefing member states are free to use the European Covid Certificates for other uses (that is different from the message originally sent).
Below the graphic on page 2 of the briefing:
It shows that discrimination has been normalized and that governments do not concern themselves with the Council of Europe’s resolution.
The Council of Europe (COE), or Conseil de l’Europe (CdE) is a European organisation in Strasbourg, site: coe.int, read their general introduction.
It should not be mixed up with the Council of the European Union (Raad van de Europese Unie), site: consilium.europa.eu, that is an institution of the European Union (wikipedia).