Yes.  The date that you register to be an EDGE member will be the same date that the payment will be taken out the next month if you continue to be an EDGE member.

So, for example, if you register on the 10th of June your next payment will be charged to the card on file on the 10th of July and so on.

If your card is declined your membership will automatically be canceled and any promotional rate will not be able to be used again to register again.