I have a flight available for online check in but the system will not let me check in. It gives me the red "check in" button and retrieves my info but then it says I have to "fill in my details." It then takes me to an info screen where everything is filled in except my emergency contact. So I fill it in, save, and ... it takes me back to the screen that says to "fill in my details," over and over. Has anyone else had this problem? I have tried multiple browsers, waiting several hours and trying again, exiting out after the save (this erases my newly entered emergency contact info), etc. This is an award ticket, if that matters. Will I just have to wait til I get to the airport to check in, or is there any other way out of this infinite loop? Thanks for any help!

Mine was LATAM, husband's was AA. Same story for both. Maybe it will work on the return. Thanks for the reply.

Thanks! I finally got it to work. It did require me to fill in my emergency contact for some reason, but your reply made me realize that it might not be "taking" due to how I was formatting the phone number. I discoverd that the system would only progress to the next stage after it showed a green check mark after each field (including emergency contact and phone number). For me, this required not only experimenting with formatting but also experimenting with the order of filling things out. The key was to keep tinkering, including clicking in already-completed fields after filling out other fields, until a green check mark showed for every field. Only then would clicking "save" allow me to progress.