To view and/or modify your SuiteDash subscription (such as upgrading/downgrading your license level, changing your payment method, or cancelling your service), you will just need to navigate to the Flyout Menu in the top right (click on your profile photo) and from there look for –>Manage Subscription

From this page, you will be able to view your current license level, it's resource usage and limitations), select a different license level to upgrade or downgrade to (along with details for those levels), change your payment method for your license, and/or optionally cancel your license entirely.