I'm still confused...
So you go to the Netflix Brazil site and when you try and change your password there it redirects you to KeePass asking for $19?
Or you are trying to change your information for this Netflix clone within KeePass and it's asking you to pay?
If KeePass is involved, I don't really see a WTF here... they provide a service they have decided to charge for and you would need to pay to access data associated with that service they provide.
Why can't you just go to the Netflix website directly and change your password?