I bought some AD tickets for domestic travel in Brazil for me and my wife. We live in Europe, I have a Brazilian ID (CPF) linked to a TudoAzul account, my wife is foreigner and no TudoAzul number and no CPF to make the link.

We both have status and points on UA (United) MileagePlus. However, we can't find in their website where we can add our UA MileagePlus number during the purchase or managing booking. Is anyone aware of how to do that online? Will that be available in the mobile check in?

Some older version of the website made that easier. I'm also afraid that in my case the link of CPF and TudoAzul is made automatically so I don't have the option of submitting a missing points claim to UA later.

Thank y'll.