M-PESA:
Once you complete an order (New or Upgrade) you are redirected to an Invoice of the same. On the Invoice there is a field to input the M-PESA Transaction Code. Send the amount due and supply the code on the respective field and click "Pay Now" The amount you sent will be added to the invoice and the excess funds if any will be added to your credits.To add these credits to an invoice, Just open the respective invoice and click "apply credits".
PAYPAL
To Use this Mode, Make sure you set the currency to USD before Making the order. On the invoice you will select Paypal as the mode of payment if not already selected. Select Pay Now, you will be redirected to the Paypal Website, Follow the onscreen prompts.