It is easy to check on the status of all your orders manually. Log into your account and check whether the payment has gone through. If everything is fine, you will see the status "new." It changes for "Processing" after the writer is assigned and starts working. You can get the complete paper after the status of the order changes to "Sent."
In case you want to get an automatic notification on the status of your order, you can add a VIP service of SMS notification to the order. Every time the status of the paper changes, you will get an SMS on that.