Block users from creating Public Microsoft Teams groups

Thank you for your post! I tried to do the same, but it's not working for me... The policy is configured exactly the same, but in the label I can't enable the auto-labelling (it should only apply to files and folders anyway). For me, the label is the default when users create a Team for example, but they can change it to None. I reckon the policy is not enforcing the "Label is mandatory for: sites & groups" setting, since users are able to select None... Any ideas? Thank you!