From what I can tell after reading the information at the link you provided PayPal is somewhat in a state of flux? Sometimes the buyer sees the enhanced checkout and sometimes they see the former checkout?
Is this the only support option? Post in the forums and hope a kind fellow user replies?
I’m kind of at my wits end with trying to make this eStore thing work. I kind of feel like I’m getting nowhere and just spinning my wheels and wondering if it will ever work.