Can't enable feature toggles: "Feature Management is not configured for editing"

Hi everyone,

I’m using the latest Grafana version 10.4.0.
I enabled the “Feature Toggles” page and also allowed editing of feature toggles in grafana.ini with

enable = featureToggleAdminPage

allow_editing = true

These settings are confirmed at the Grafana Settings page: Home > Administration > General > Settings

I can see the “Feature Toggles” page at: Home > Administration > General > Feature Toggles
However, I cannot enable any feature. On top of the toggle, a tooltip appears: "Feature Management is not configured for editing" - although it clearly is in the settings.

any idea?
Thanks for your help