I'd appreciate a little help decoding some contradictory messages from the BA web site, please...

When I'm logged in, the front page of the BA web site has a scary banner in red under 'your next flight' saying 'We are missing some passenger details - please add these now'. I'm sure all the API was added at time of booking months ago. There is a clickable link which takes me into MMB, where there is a green tick and "All details provided" against both passengers, which seems to contradict the initial warning.

Everything else in MMB looks normal except the outbound flight is in red with the warning "your seat has changed". I don't remember the seats changing recently, but I am quite happy with the seat numbers shown.

Is there really a problem with passenger details? If so what? I don't want a problem to prevent OLCI at T-24.

Flight is BA249 LHR-GIG on 13 November and the booking is a 2-4-1 Amex redemption if it makes any difference.

Many thanks for any insight.