The payment isn't recurring so not entirely sure what you mean. If the single payment for 1 month's usage equals 1000 hours how does that balance carry over if you decide to pay another single payment for another month but at a different number of hours.
I recently upgraded to the 500 hours/5 accounts service of Runemate. When processing the payment through PayPal I double clicked submit and now shows the charge happening twice. Is there a way I can just have that second charge applied to my next month's time?