just got mine too - i dont know how you can get as far as the 'basket' without putting in your KOA number and ID (passport no) - when I did that it actually confirmed my name ; then allowed me to buy ticket(s) - it soon disappeared from basket though and was only showing up under a 'ticket stub' looking icon , which allowed me to download to apple/iphone wallet
tbh incredibly complex system to get a 10 euro ticket - 2 different websites ; 1 for koa/fan card , then the other (which I only found by chance today) for ticketing - and need new login / password details
the cypriot fa website still shows ticketing details for Hampden match ,,,,,,,,