GameKit SaveGame not working (iCloud Drive not activated)

So I am trying implement GameKit SaveGame functionality on my iOS game. I am aware that this requires iCloud and iCloud Drive access in order to work properly.

When I call fetch from the GameKit API I get an error message saying:

"The requested operation could not be completed because you are not signed in to iCloud or iCloud Drive is not activated"

I have both activated, so my iCloud account is ready and my iCloud Drive is activated. However I don't see my app in the list of apps using iCloud Drive. Do I need to add any permission to the info.plist for it to work?

I added iCloud -> documents features in xCode already and it doesn't do the trick, so I must be missing something. Do I need to activate something for my app under the iCloud Dashboard?

I really need to deliver this product I'm working on and it's being really complicated to find the solution.

GameKit SaveGame not working (iCloud Drive not activated)
 
 
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