19:43:35.587 - Cannot write to DataStore from studio if API access is not enabled. Enable it by going to the Game Settings page.
19:43:35.588 - Script 'ServerScriptService.server', Line 45
19:43:35.588 - Stack End
I went to the configure place page of my game, there is nothing about "DataStore API access" ...

4 comments
You have to enable it from the Games tab, not Places.
Click onto the game page - > click the "..." -> click "Configure this game" -> click "Enable Studio Access to API Services" -> Save (Obv)
You're trying to use DataStores from studio, but your Studio Access to API Services is turned off. Turn it on mate.
@Messor, @mu6666: thanks, can't believe I didn't notice that.