Issues with the website. Entering my passport number and cannot get past this page, it wont accept it. It will go through if i put in a fake CPF.

The issue is that it then asks you for the CPF for both passengers from therein. If i go ahead and put another fake one in, will i then need to show this as some sort of identification at the airport???

Bit hesitant to go through with it. May try to book over the phone, my Portuguese is rusty but i am fluent in Spanish so i may just get through.

Thanks