On line check in HELP!

[Simon & Suzann]

Just tried doing on line check in for our flight tomorrow but kept saying there was an error on 2 of my daughters expiry date and to put correct date in. It is 100% right putting it in as 3rd daughters was not saying error and they had passports same day etc.

Next thing it says we can not check you in on line and to do it at the airport.

It is BA flight but with AA on their site.

Any help would be appreciated.

[Canoeing fairy]

Is the date in an American format mm dd yy on the aa website?

[Simon & Suzann]

I rang them and they don't know the issue as all seems fine but as i had a few goes it has locked up and we can only check in now at the airport