You can pay with PayPal or any major Credit/Debit card online. We will send you a link to the invoice. This link will take you to the secure PayPal page where you can process your payment directly from your mobile phone. PayPal page where you enter your card data is a 128-bit encrypted HTTPS page that is hosted and secured by the largest online payment provider in the world - PayPal. Nerdify does not get any data about you or your card whatsoever.