To Upgrade Subscription Plan as an app user, simply press on the "Profile" button, then click on the "Upgrade Now" button and follow the instructions.
If you have questions, click on the Support button and let them know you wish to upgrade to Owner Operator Pro to get access to a dashboard synced with your app. They can help guide you through the process of upgrading your subscription.
It's not only easy - but a great idea! (Especially if you're the driver and someone else does the dispatching.)