Billing is where you activate your Meeshop subscription. When you subscribe to Meeshop you also activate/publish your shop. We recommend waiting to subscribe and activating your shop until you are done with your webshop. 

You have 30 days free trial from the day you create your Meeshop account. 

As long as your subscription isn't activated your webshop will be inactive/unpublished. 

Once you have subscribed your subscription status will change from inactive too active.