If you already have Lookout Premium and want to upgrade to Lookout Premium Plus, you will need to cancel your Lookout Premium subscription first, then upgrade to Premium Plus.
Because your Lookout payment is controlled by Apple, you will need to cancel your subscription through your iTunes account. Here's how:
- Open the App Store on your device
- Scroll to bottom and tap your Apple ID
- Sign into iTunes
- Under Subscriptions, tap Manage
- Select Lookout
- Turn Auto-Renewal OFF
Once that is complete you can choose to upgrade to Premium Plus from within the Lookout app.