To access server-side premium features, you'll need to create a subscription for your account (replace EMAIL@ADDR with your user email):
./server.sh create-subscription EMAIL@ADDR
Note that subscriptions created on your self-hosted server in this manner unlock server side premium features, but not client-side premium features (such as Super notes and Nested tags). To gain the full benefits of the Standard Notes ecosystem, you'll need to purchase an offline plan.
Offline plans offer you the full range of benefits of the Standard Notes ecosystem at a fraction of the cost of our hosted plans.
Please consider donating if you do not plan on purchasing a subscription.