How to add 2 single device licenses to same norton account?

I have 2 x single device licenses for the product (Norton 360 for Mobile). I created a Norton account and added 1 of the single device license. However I am not able to add the other single device license to the same Norton account.

I installed the Norton Antivirus app on another mobile phone and sign in to the Norton account. From there, I tried to key in the second single device license but failed.

Please advice. Thank you.

On the second mobile device to to My Norton - Login | Manage, Download or Setup an Account . Follow the instructions to install on this device and enter the product key when prompted.

If that does not help, you should contact Norton Support. They may even be able to upgrade your two separate licenses into a single licence for less money. And you would probably have the ability to add more devices if necessary.

If using the chat feature, when you can enter information enter “Agent Please” to get connected to a human.