This site is an absolute embarrassment and whoever is in charge should be fired and never allowed to touch a computer again.

I was trying to upload my vaccination proof. I am fully vaccinated with a jab in two different countries. So I have two bits of proof, 1 for country A and 1 for country B. It allows you upload 2 files so no problem, right?

After being rejected a dozen times for "not fully vaccinated," and through trial and error, I FINALLY figured out that whoever verifies this cannot see the 2nd file, only the first. So the solution was to combine the images into a single file and upload it. Massive pain.

Also discovered that if it says there is a website problem when you try to upload, it more than likely means your files are too big to accept. 2 lines of JavaScript would have made this a graceful error that would help you troubleshoot the issue, but apparently Delta can't be bothered with nonsense like that.

Terrible execution Delta.