If verification checks fail or if travellers do not have access to a digitally verifiable Singapore Vaccination HealthCert, travellers can show their physical vaccination certificate issued by the Singapore Government as proof of vaccination.
Note: You are recommended to regenerate your Vaccination HealthCert if your offline QR codes cannot be verified (or if your certificate does not currently display offline QR codes). This could happen due to updates in EU DCC's regulations which may not be reflected in an older version of the certificate.