[QUOTE=hikouki;27239574]Having issues logging on...

Are you using a US passport? I noticed today that when I went to check in for HKG-SFO, I got this same error message. I am a US citizen and Diamond CX member, so my US nationality was pre-populated on the first webpage of the online check-in. When I tried changing my nationality to HK as an experiment, I was able to proceed to the check-in page. I did not proceed as this would have, I think, messed up my arrival in SFO with Global Entry (although maybe it would have been fixed at the airport by staff at the gate). Still, maybe not a bad strategy if you are running late to the airport and don't want to miss the check-in cutoff.

Painful. I often have problems with mobile check-in. Don't count on it last minute.