I am subscribed to a premium license (Pro or Studio) but the app does not show the premium functionality yet.

Licenses not kicking is mostly caused by the App Store not having sent the green light signal to the app. Try the following to enable your license:

• Make sure you are logged in to Bobclass Cloud (Settings > Bobclass Cloud) on all your devices.
• Go to Settings > Upgrade to Pro/Studio, scroll down and click the Restore Purchase button.
• Restart your device and launch the app again.

If the above does not work, then there may be an issue with payment of the subscription in the App Store. You can check this in the iOS settings of your device:

Settings (of your device) > Apple ID (top of screen, click your name) > iTunes & App Store > Apple ID (your email address) > View Apple ID > Subscriptions