Go to page in InExchange Network: Account\Settings\Incoming invoices
The address you can enter in the settings for incoming invoices in InExchange Network is used for those invoices that your suppliers send to you as e-invoices.
But for those invoices that your suppliers send to you as PDF invoices, they can enter any e-mail address. If you feel that you receive PDF invoices via e-mail to the wrong address, check with the sender how they send invoices and if they have chosen a specific e-mail address in your customer card, or specifically for the current invoice.
You are welcome to contact InExchange Support if you need help determining which settings apply.