Hello Ezz,
While I’m not the plugin author, the region is meant to be the (Province/Governrate/State…etc) and the cities are part of governrates just the way it is in real life. A work around I would suggest is renaming your fields if you are planning to use cities and neighbourhoods, instead of state and cities.
State/Region/Governate are all the same field, it’s just different from country to country, for example, arab countries either use governrates or provinces, USA uses states…etc. What the field is named is fetched using the native Woocommerce API, not as part of the plugin.