Delete a non existant kubernetes group cluster

Hi

I tried to remove a group cluster from my group, but I clicked on “remove integration and resources”, but I already removed them manually from the cluster. That led to the process being stuck trying to delete Prometeus and GitlabRunner. Is there a way to force-remove my group cluster? I need to assign another one, but the free account wouldn’t let me unless I remove the previous one.

Thanks in advance