This is a comedy and a drama at the same time. What a ridiculous way to organise things that seriously impact people's lives. It's so hard to control myself and not use swear words!
I went through countless attempts to submit and managed to do so after several hours just to be rejected! I have one J&J vaccine done in the EU - submitted covid eu certificate and got rejected. Sent a few emails to the embassy as my flight is on Saturday but no reply. I already paid for my flight, my hotel, insurance, covid test, etc. What a nightmare!