I just received my Pass or rather a QR code; having applied just before they introduced the tracking number system. I have only the British NHS letter, with a bar code, confirming my doses, plus a downloaded 30 day cert. which has a QR code but for domestic use and no way to get a passport number added. I had purchased AXA Sawadee insurance, booked a 1 night 2 day quarantine package for £105 through Agoda and received the hotel ASQ program confirmation. Though I had a flight booking, they only asked what flight I was arriving on and listed the transfer on route, but in a listed country. All copies I sent were in jpeg, not pdf, and I did not use hotmail / msn as was advised against on the application. The airline has sent a lot of travel info and stipulated using FFP2 type masks, no cloth and no valves which came as a surprise.