We've been made aware that when selecting a country such as Brazil, and a state such as Pernambuco the city field will only populate with the state name. This is due to a bug or missing data in the GeoData Solutions API. Unfortunately, issues in the API are out of our control. All we can do is inform the API maintainer of the problem and wait for them to correct it.
In the interim, we recommend disabling the city field and inserting a normal text block field in its place until GeoData Solutions makes the needed corrections on their end. Once we receive confirmation that a fix to the API has been made we will update this article as well as release an updated version so you know when you are able to republish the city field.