It's possible to get the full Professional Edition on a monthly base.
This is done using a subscription.
Just order the subscription product on the website (https://www.live-score-app.com/articles/subscription), enter your payment data and you'll automatically get a new license every month. You can cancel anytime if you prefer to stop your subscription. So this is perfect for all kinds of sports, leagues and their seasons.
Read more about our subscriptions at https://www.live-score-app.com/userguide/subscription