Join Date: Jun 2009
Location: San Jose, Costa Rica
Programs: UA 1K M, AA 2 MM PREM, HYATT Globalist, Marriott Lifetime Platinum., Hilton Gold, Hertz Prez Club
Posts: 811
This has happened to me several times. About 6 months, we could have checked in as there is a Lufthansa confirmation code. But not any more.
Some one please wake United/Lufthansa customer service and hope they can fix this issue.