oops unapproved - next try
How can I fix it?
Salotto
Use a Amazon.co.uk trial account, change your Amazon region in VIP settings
to Amazon.co.uk, restart SF and use an undetected VPN in UK
But earlier you wrote: "I'm from Brazil"
So I think you have a PrimeVideo Account there ..
.. if so you can use this account to get it from PrimeVideo
Use an (undetected) VPN in Portugal

url is
here

(tested with PV account in Mexico)