You can log back into your CrowdPass account to correct your document. Either through the same link in the communication email last time or through this link https://app.crowdpass.co/signin (Please select "Attendee" tab). Then click on "EDIT" to re-upload your document. If the page is stuck or doesn't let you to SUBMIT, refresh the page and try again.
If that doesn't work, feel free to also send correct vaccine card/negative Covid test result to our secure portal: firstname.lastname@example.org