PayPal subscriptions don't support a change in your regular billing amount, e.g. upgrading to the next package. Luckily our Credit/Debit Card payment facility supports automated billing, and supports dynamic amounts also.
#1) Cancel PayPal subscription
So your first steps would be to cancel your PayPal Subscription to Pixeno first, view steps here: http://www.wikihow.com/Cancel-a-PayPal-Subscription
#2) Add credit/debit card
Next you will need to add your Credit/Debit card on file here: https://pixeno.com/account/clientarea.php?action=creditcard(don't worry this information is not stored on our servers, Stripe our secure payment partners stores this information on their secure PCI-DSS compliant database, from which we only have access to a token to charge your card).
#3) Change default payment method
Now change your default payment method to Credit/Debit card under the dropdown on your profile: https://pixeno.com/account/clientarea.php?action=details
#4) Automated payments active
And then automated payments will be supported via your card on file. You notified in advance via email about the upcoming automated payment with a copy of the invoice, so you know exactly when and what is going out.