Thanks for the analisys. Actually I just investigated why the coordinates for some places were the same and I found out that there is an issue in the registry screen, as follows:
1. While regestering a new place address, the autofill quicky identifies the address as showed in picture 1.
2. It happens that when I click the autofill, the city name is NOT automatically fulfilled as it should be (it actually starts to be fulfilled but then disappears).
3. Then I have to input it manually before choosing the option “mark address in the map”. But after doing so the city name disappears again.
I believe that this error is causing users to register mistaken coordinations.
Besides, I also have one doubt: how can a user search for a specific cathegory in a specific city? is there a way to have a city filter?