Moderator, Iberia Airlines, Airport Lounges, and Ambassador, British Airways Executive Club
Join Date: Feb 2010
Programs: BA Lifetime Gold; Flying Blue Life Platinum; LH Sen.; Hilton Diamond; Kemal Kebabs Prized Customer
Posts: 63,771
Try the link in the Wiki. And you should find the LIN-LHR flight in the App via My Bookings, you are looking for the ticket number. If it was SSSS then you should be able to check-in, it's just the boarding pass that is inhibited. Also check things like ESTA validity and first night address. If no clear answer comes up then you better call.