It turns out my password was too secure to be accepted -_-
I had to cut it to 20 chars without special characters, then I executed
nelsonaponte@NELSONS-AIR roomba % python3 ./getcloudpassword.py UUUUUUUU PPPPPPPPP
And this time I could retrieve the passwords, manually add them to the things on the MainUI and the things went online right away.