After purchasing Prembox Premium Key on Prembox PayPal Reseller, please follow this instruction to activate premium:

1. Log in to your Prembox account: https://prembox.com/

(If you don't have an account, please register a new account: https://prembox.com/register.html)

2. Go to "My account": https://prembox.com/account

3. Click on "Add traffic" on the left column of the website.

Paste your Premium key / Premium code in "Received code:", and click on "Recharge" button to proceed.