Renewal of Norton Mobile Security

I stay in India. I have downloaded Norton Mobile Security(NMS) via Samsung Apps to my Samsung phone. NMS comes with a 90 day free subscription. How do I find out my licence number for NMS and how do I extend the subscription after the 90 day subscription expires. I intend to buy a 1 year subscription pack of NMS which is available in retail outlets for INR 599. I could not find any option to key in a licence number for a subscription pack purchased offline. The only renewal option I could find requires me to make a credit card payment to make a purchase online.

You will be offered the chance to renew once the trial expires.  If you would like to use the retail version, you will have to uninstall the trial first before you install and activate the retail version.  Activation keys do not transfer between the different layouts that are created.  

Thank you, Erik