Where do I manage my subscription?
The PRO license is a recurring Subscription that you can manage in your Microsoft account page.
You can also get there via the Drawboard PDF settings menu, where it says Drawboard PDF PRO. You will find a link to manage your subscriptions.
I want to change my billing subscription cycle.
If you want to change your subscription cycle from 3 months to 1 year for example:
1. You'll need to unsubscribe from from your current cycle(effectively it just stops renewing your license)
2. Wait for the end of the billing cycle to end
3. Resubscribe to the desired billing cycle
You will not be able to resubscribe to a new subscription cycle until it is over(we know it's not ideal but it is a Microsoft Store limitation)
For more info, check out the Microsoft Store's Payment & billing section.