I am using Google Places API in my android app to retrieve locations of nearby places such as schools or hospital & display their locations on the map.Now 3 weeks ago I enabled the api & integrated it with my app WITHOUT ENABLING BILLING and all requests were accepted & the api returned the locations.But when I used the app yesterday the api didn't return the locations & instead returned the message saying that request was denied & I had to enable billing in my Google account.
Now my query is why was I able to use that api without enabling billing for 20 days while I am unable to do it now.Is there a certain period till which requests are accepted without billing?I also tried regenerating the key & disabling & re-enabling the api but nothing worked.I can't use a credit card to enable billing since I don't have one.Thanks in advance for any help.