Tap the offer icon (some devices may display Upgrade).
Figure 1-1
To display your preferred subscription options, tap either Yearly or Monthly.
Figure 1-2
Select your subscription plan and tap Upgrade. Your subscription will be renewed automatically on the interval you select. The example below shows a Monthly upgrade for a Mobile device.
Figure 1-3
Tap Subscribe. Your purchase will be completed using your Google Play account. Follow the on-screen instructions to complete your purchase.
Figure 1-4
Tap Finish. When your purchase is successfully completed, your license will be updated automatically and you will have access to the premium features immediately.