Hi, I have a business class booking (booked on LATAM) from London to Florianopolis - outbound LHR-MAD-GRU-FLN, inbound FLN-GRU-LHR. All legs are on LATAM except the first LHR-MAD which is Iberia. If I use the web or app to select seats all looks good but then when I look at the booking no seats are allocated on any of the legs. If I go select seats again, the ones I previously selected are taken, so they have been allocated to me but are not showing as allocated to me on the booking. I've been in several times over the past couple of days selecting seats but they never show.

Has anyone else had this problem and is there any way to fix it?