I was wondering one thing when filling out the application today, actually - do you guys detail all vaccinations or just the latest (which is the default question with the option to add more) ? - I decided to test it a bit and just specify the latest vaccine date and upload the certificate, not all three dates. Worked like a charm.
Also, this was once again done with digital SSO card as proof of insurance, and not an insurance policy - all very straight forward, and took me less than five mins to complete.