In TPE, choose ‘Skyfire’ from the More page or from the toolbar (on iPad):
By default, if you haven’t previously used Skyfire, you’ll be shown the trial/purchase page where you can either start a free 30-day trial or sign up for a subscription:
If you want to subscribe, be sure to scroll down to see subscription options:
If you’re already signed in and you want to view the details of your current trial or subscription (e.g. expiry date, upgrade or renewal options), from the Skyfire page choose “ Subscription ”: