>>It is working now. However, there is still at least one problem.
>>
>>After the payment was successfully processed, there was a page confirming that. On that page were two links, one of which is supposed to lead to "invoicing" so I can print my invoice. This link does go to a page, but that page is completely blank.
>
>Thanks, I am going to have to fix that.

Now, accessing the Invoicing link in the Setup section, I can see my invoices, including today's. When I click on the appropriate link, the invoice appears. However, it comes up in a popup, and there is no menu on that popup, or button on the page to print that invoice. So, at the moment, I'll have to capture a screen shot, then print that. I'm losing patience with this.