First of all, im not trying to sabotage one of my player's data. I've been trying to test datastorage for a while now, with the same error message : Cannot write to DataStore from studio if API access is not enabled. Enable it by going to the Game Settings page. Help?
That means to go to your place website on ROBLOX, and then press Configure this Game. There will be a option to enable API access in studio. Check that. Then press Save. This will let you to do it on a test server. DON'T TRY THIS IN PLAY SOLO AS THIS WILL NOT WORK. ALSO, MAKE A BACKUP PLACE FOR THIS. IT MAY GET PROBLEMS WHEN IT GETS SAVED.