For months now any sales I have made to buyers outside the UK that include an item of £20 or more are being treated by the eBay invoicing system as Simple Delivery sales. So if I try to invoice the buyer I have this message, in blue, at the top of the invoice page: "Invoices cannot be sent for items where eBay manages all or part of the postage. These items are excluded from this invoice."  So the system will not let me  send a  (correct) invoice

I have had two lengthy 'phone conversations with eBay people about this. They have promised that it will be dealt with but months later I the problem continues. They have advised me to contact affected buyers, ask them to pay whatever their systems shows, and then for me to make a refund of their  inevitably overpaid postage. Clearly this is totally unsatisfactory, as well as being a pain for me to explain to the buyers.

Anyone else affected by this? Any ideas about what to do about it?