AFAIK it works the same way as it pretty much has the last few months. Have you waited for the 7 or 8 days from the end of the listing to file the UPI? If you're trying to file sooner then the only option you'd get would be the mutual cancellation thing.
Are you filing through .ca or .com? If on .ca have you tried on .com? I haven't had any problems filing for UPIs.