-- we could assume you received papers at the vaccination;
-- said vaccination certificates are insufficient and you seem to require a different, related, complex document, which basically states the same of your vaccination certificate.
Though one understands the use of certificates as passes could boost practice for falsification of simpler certificates, the practice as described still seems absurd.
-- you are vaccinated;
-- we could assume you received papers at the vaccination;
-- said vaccination certificates are insufficient and you seem to require a different, related, complex document, which basically states the same of your vaccination certificate.
Though one understands the use of certificates as passes could boost practice for falsification of simpler certificates, the practice as described still seems absurd.