I\'m using the ggmap\'s geocode to find the latitude and longitude of different cities. It worked completely fine yesterday but I get an OVER QUERY LIMIT after only one requ
From June 11th 2018 Google changed the access to the Google API.
Now you NEED to set a credit card to your account to get permission to use the APIs. There it's a free account which will not charge you nothing on your credit card with some limitations on the number of queries you can do (like we had before this change).
If you need more queries you should change your account to a normal one which will charge you when you use the APIs more of the free limits.