RequestSharedAnchors: Failed with result code 11

I'm building a multiplayer app in Unreal Engine targeting Meta Quest 3 and utilizing shared spatial anchors. 

I'm trying to request shared spatial anchors by calling GetSharedAnchorsAsync(). I provide a GroupUUID and the anchors UUIDs that I previously saved in the cloud and shared via ShareAnchorsAsync().

However I'm getting the error: RequestSharedAnchors: Failed with result code 11.

The error code is tied to the error: Failure_ErrorLimitReached. 

Here is my setup: 

-The Quest is logged into the same developer account, which owns the organization which owns the app

- The headset is in developer mode

- Enhanced Spatial Services are enabled

- anchor_persistence_cloud_anchor_service_enabled: true confirmed in logcat

- Data Use Checkup (DUC) completed – User ID and User Profile access approved

- The organization is verified

- Build uploaded to a release channel

- The release channel has a test user assigned – the same admin developer account, also used for organization verification

The ShareAnchorsAsync call completes with XR_SUCCESS.

If maybe this helps, I also found following line in logcat: xr_cloud_anchor_service: discoverSpatialEntities Failed with error: networking::GraphQLError: code=2128025, fb_traceid=EhAbjwCqMot

Can anyone please explain to me the cause for error with result code 11? How to setup the sharing + requesting spatial anchors correctly? What am I missing here? 

I work in c++.