The quote is sent out to the email address that you listed when the DiscApp was created. You don't need access to the maintenance page to see the quote or make a payment. If the email address on your maintenance page is no longer valid, you will need to log in and update it.
Thanks Tamara. Problem is, I think, that the Paypal account is run by someone who does not have access to the Admin page. Any chance of an email next time round?