When I send an in invoice to my client via Peppol they do not see the attached PDF that is in the XML (I checked the XML from Odoo, the invoice is there and it is correct Base64)

This client is using EASI Adfinity for receiving Peppol invoices.

I think EASI are expecting the PDF to be somewhere else because they see the PDF's in other invoices (like from Brico or people who use Billit).

They do not have access to the XML received.

Does anyone else have this issue?