To make life easier for everybody, we tried to check in via the X app for our upcoming Apex cruise from Amsterdam. As germans we do have the vax booklet - no names and just manual entries written on the page for covid vaccination - or the foldable one sheet digital vax proof with 3D code and info in very small print, some of it upside down to make it foldable.
We provided a photo of the digital document in high res so it should be readable.
X app shows "there has been an issue with your vaccination documents, please resubmit".
Did any european travellers succede with a valid upload? What document did you use and how did you upload it?
Thanks for your help! Regards, Ralf