Time for upgrade invoice email?

[Skulldog]

Found this script a week ago, loved it, and after playing around with it for a for a bit, and filled out a request for the upgrade/donor status on the 1st.

Wasn't sure how long I should be waiting for the bill, as I haven't received any Paypal invoices yet, and there's no way to see if my request is in any state of review.

Keep up the great work, I look forward to play around with the code myself, even as a super beginner to PHP, the base is very well noted and clear to work with even for someone like me.