I just booked a SDU-GRU, no problem with cc (canadian master card). Seat selector didn't work, will call in. What is interesting is the Latam/ca site did not first redirect me to Brazilian TAM site . In the past, this always happened and I was never able to make payment. Are they more fully integrated? Don't know. Also, Latam site would not display properly on a pc, only on my tablet.